Robot inquisition keeps witnesses on the right track

MEMORY is a strange thing. Just using the verb "smash" in a question about a car crash instead of "bump" or "hit" causes witnesses to remember higher speeds and more serious damage. Known as the misinformation effect, it is a serious problem for police trying to gather accurate accounts of a potential crime. There's a way around it, however: get a robot to ask the questions.

Cindy Bethel at Mississippi State University in Starkville and her team showed 100 "witnesses" a slide show in which a man steals money and a calculator from a drawer, under the pretext of fixing a chair. The witnesses were then split into four groups and asked about what they had seen, either by a person or by a small NAO robot, controlled in a Wizard of Oz set-up by an unseen human.

Two groups - one with a human and one a robot interviewer - were asked identical questions that introduced false information about the crime, mentioning objects that were not in the scene, then asking about them later. When posed by humans, the questions caused the witnesses' recall accuracy to drop by 40 per cent - compared with those that did not receive misinformation - as they remembered objects that were never there. But misinformation presented by the NAO robot didn't have an effect.

"It was a very big surprise," says Bethel. "They just were not affected by what the robot was saying. The scripts were identical. We even told the human interviewers to be as robotic as possible." The results will be presented at the Human-Robot Interaction conference in Tokyo next month.

Bilge Mutlu, director of the Human-Computer Interaction Laboratory at the University of Wisconsin-Madison, suggests that robots may avoid triggering the misinformation effect simply because we are not familiar with them and so do not pick up on behavioural cues, which we do with people. "We have good, strong mental models of humans, but we don't have good models of robots," he says.

The misinformation effect doesn't only effect adults; children are particularly susceptible, explains the psychologist on the project, Deborah Eakin. Bethel's ultimate goal is to use robots to help gather testimony from children, who tend to pick up on cues contained in questions. "It's a huge problem," Bethel says.

At the Starkville Police Department, a 10-minute drive from the university, officers want to use such a robotic interviewer to gather more reliable evidence from witnesses. The police work hard to avoid triggering the misinformation effect, says officer Mark Ballard, but even an investigator with the best intentions can let biases slip into the questions they ask a witness.

Children must usually be taken to a certified forensic child psychologist to be interviewed, something which can be difficult if the interviewer works in another jurisdiction. "You might eliminate that if you've got a robot that's certified for forensics investigations, and it's tough to argue that the robot brings any memories or theories with it from its background," says Ballard.

The study is "very interesting, very intriguing", says Selma Sabanovic, a roboticist at Indiana University. She is interested to see what happens as Bethel repeats the experiment with different robot shapes and sizes. She also poses a slightly darker question: "How would you design a robot to elicit the kind of information you want?"

This article appeared in print under the headline "The robot inquisition"

It's all about how you say it

When providing new information, rather than helping people recall events (see main story), a robot's rhetoric and body language can make a big difference to how well it gets its message across.

Bilge Mutlu of the University of Wisconsin-Madison had two robots compete to guide humans through a virtual city. He found that the robot which used rhetorical language drew more people to follow it. For example, the robot saying "this zoo will teach you about different parts of the world" did less well than one saying "visiting this zoo feels like travelling the world, without buying a plane ticket". The work will be presented at the Human-Robot Interaction conference in Tokyo next month.

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Scores missing after ferry sinks in Bangladesh: officials

DHAKA: Scores of people are missing after a ferry carrying around 100 passengers sank in a river in Bangladesh on Friday, officials said.

"So far we have gathered that the ferry was carrying around 100 people and some have swum to the banks," local police chief Jahangir Hossain told AFP after the accident on the Meghna river in the central district of Munshiganj.

District administrator Saifuddin Badal said that more than 50 people were still unaccounted for.

"We heard around 25 people have swum ashore," he told AFP.

Badal said the boat, named MV Sarosh, was carrying passengers from the capital Dhaka to the southeastern district of Chandpur.

It was not immediately clear what caused the accident but Bangladesh has a history of boating disasters as a result of lax safety standards and frequent overloading of vessels.

Last March 147 people were killed after a passenger vessel sank in the Meghna river after colliding with a cargo ship.

-AFP/fl

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Police converge on mountain town in hunt for cop killer

Ex-cop at center of California manhunt

Ex-cop at center of California manhunt

Ex-cop at center of California manhunt

Ex-cop at center of California manhunt

Ex-cop at center of California manhunt

Ex-cop at center of California manhunt

Ex-cop at center of California manhunt

Ex-cop at center of California manhunt

STORY HIGHLIGHTS

• NEW: With snow coming, authorities continue to hunt for the suspect near Big Bear Lake


• Police believe former cop Christopher Jordan Dorner shot three officers, killing one


• This was days after he allegedly killed two people, one a retired LAPD officer's daughter


• In an 11-page manifesto, Dorner promises "war" on police and their families

Los Angeles (CNN) -- A former Los Angeles cop with military training vowed war against other men in blue Thursday, leaving one officer dead days after he allegedly killed two other people to begin a wave of retribution for being fired, police said.

The focus of the intensive, expansive manhunt is Christopher Jordan Dorner, a 270-pound former Navy lieutenant who has professed his venom against LAPD officers he claimed ruined his life by forcing him out of his dream job.

Dorner blames one retired officer for bungling his appeal to get his job back in an 11-page manifesto, in which he also complained of mistreatment by the LAPD. In that letter -- provided to CNN by an LAPD source -- he vowed to violently target police officers and their families, whoever and wherever they are.

"I will bring unconventional and asymmetrical warfare to those in LAPD uniform whether on or off duty," Dorner wrote.

"I never had the opportunity to have a family of my own, I'm terminating yours."

Authorities believe he followed through on his threats early Thursday by shooting a Riverside, California, police officer and two others. A day earlier, Irvine police named Dorner a suspect in the double slayings Sunday of a woman -- identified by Los Angeles police as the daughter of a retired LAPD officer -- and her fiance.

"My opinion of the suspect is unprintable," said Riverside police Chief Sergio Diaz, hours after one of his officers was killed. "The manifesto, I think, speaks for itself (as) evidence of a depraved and abandoned mind and heart."

The violence, as well as Dorner's background as a police officer and military trained marksman, left police on edge around Southern California.

In Torrance, LAPD officers guarding one of Dorner's alleged targets mistakenly opened fire on a blue pickup truck that resembled one Dorner was thought to be driving, said Los Angeles police Chief Charlie Beck.

The gunfire left two people wounded, Beck said. Torrance police also fired on another blue pickup, but no one was injured in that incident, according to a senior law enforcement source.

In downtown Los Angeles, police wearing body armor patrolled outside their own iconic headquarters.

Police have good reason to be fearful, the chief said.

"Of course, he knows what he's doing. We trained him," Beck said. "He was also a member of the armed forces. It is extremely worrisome and scary, especially to the officers involved."

The manhunt for Dorner spanned hundreds of miles and numerous counties. By Thursday afternoon, it was largely centered around Big Bear Lake -- about 100 miles east of Los Angeles -- where authorities found the truck the suspect allegedly used in the Riverside shooting.

KTLA: Manhunt for former cop after officers shot

Police confirmed that the vehicle, which was burnt out when it was found, belonged to Dorner by its vehicle identification number, San Bernardino County Sheriff John McMahon said.

This discovery spurred more officers to converge on the area to conduct beefed up patrols, staff checkpoints and go to every residence in the mountain community. McMahon acknowledged the fire may have been set as a diversionary tactic, though law enforcement isn't taking any chances. Early Thursday evening, he said that aerial and K9 searches on the ground will "continue as long as we can" -- though snow is coming -- and urged locals to be on alert.

"He could be anywhere at this point, and that's why we're searching door to door," the sheriff said.

1 cop dies in 'cowardly ambush'

It all started Sunday when Dorner allegedly killed two people in Irvine, according to police.

Police identified the victims as Monica Quan and her fiance Keith Lawrence.

Quan, 27, was the daughter of retired Los Angeles police Officer Randal Quan, LAPD Officer Tenesha Dobine told CNN. In his manifesto, Dorner said Quan handled his appeal.

On Tuesday, Dorner checked into the Navy Gateway Inns and Suites on San Diego's large naval base, Cmdr. Brad Fagan said.

Dorner likely had access to the hotel because he'd been honorably discharged from the Navy Reserve, said the Navy spokesman. Having retired February 1 as a lieutenant, Dorner worked with mobile inshore undersea warfare units and provided security on oil platforms in Iraq, according to Pentagon records. He was rated as a rifle marksman and pistol expert.

"He did not physically check out" Wednesday as expected, Fagan told reporters.

Police in San Diego say a man who could have been Dorner tried to hijack a boat there on Wednesday. Someone later found a wallet containing Dorner's identification and an LAPD detective's badge near the San Diego airport, according to police. It was unclear whether the badge was legitimate.

Timeline in manhunt for former L.A. cop

By about 1 a.m. Thursday, the scene had shifted about 100 miles north to Corona, California.

There, a pair of LAPD officers on a protection detail were flagged down by a citizen who reported seeing the suspect's vehicle, LAPD Deputy Chief Jose Perez said.

The officers chased the vehicle and caught up to it on an Interstate 15 off-ramp.

"The officers were fired upon with a shoulder weapon," Perez said, with one of them suffering a "graze wound" to his head. The police returned fire, while the suspect set off once again.

About 20 minutes later, two police officers were in their car at a stop light in Riverside when Dorner allegedly pulled up beside them.

That driver unleashed "multiple rounds" from a rifle at the officers, riddling the cop car with bullets and leaving a 34-year-old officer, who had been on the Riverside force for 11 years, dead, according to Diaz. The other officer, 27, was "seriously wounded but we expect a full recovery," the Riverside police chief said.

KCBS: Riverside officer fatally shot

It was "a cowardly ambush," said Diaz, claiming Dorner has "no connection" to his city.

A good Samaritan picked up one of their police radios and called dispatchers to send help, Riverside police said.

Suspect calls attacks 'a necessary evil'

In addition to posting his manifesto online, Dorner reached out directly to CNN, mailing a parcel to AC360 anchor Anderson Cooper's office at CNN in New York.

The package arrived on February 1 and was opened by Cooper's assistant. Inside was a hand-labeled DVD, accompanied by a yellow Post-it note reading, in part, "I never lied" -- apparently in reference to his 2008 dismissal from the LAPD.

The package also contained a coin wrapped in duct tape. The tape bears the hand-written inscription: "Thanks, but no thanks, Will Bratton." It also had letters that may be read as "IMOA", which could be a commonly used Internet abbreviation for "Imagine a More Open America," or possibly "1 MOA," which means one minute of angle, perhaps implying Dorner was notably accurate with a firearm.

The coin is a souvenir medallion from former LAPD Chief William Bratton, of a type often given out as keepsakes. This one, though, was shot through with bullet holes: three bullet holes to the center and another shot nicked off the top.

The editorial staff of AC360 and CNN management were made aware of the package Thursday. Upon learning of its existence, they alerted Bratton and law enforcement.

Bratton headed the LAPD at the time Dorner was dismissed.

The dispute centers on a 2007 incident in San Pedro involving a man's arrest at a DoubleTree hotel. Two weeks later, Dorner accused his training officer of kicking the man after he'd given up.

The investigators' report said "the delay in reporting the alleged misconduct coupled with the witness' statements irreparably destroy Dorner's credibility." The report cited contradictory accounts from the arrested man and his father and denials by the accused officer and three hotel employees that the arrested man had been kicked. Dorner claims he was wrongly ousted for blowing the whistle on what he insists was police abuse.

Suspect's grudge dates back to 2007 complaint

Dorner challenged his firing for years, losing at every turn. First, the police department's Board of Rights rejected his appeal. Then, in October 2011, a judge ruled against his appeal, according to court records.

Beck, the Los Angeles police chief, said Thursday that Dorner's case had been "thoroughly reviewed" and said the department would not apologize to Dorner or clear his name.

But as his manifesto shows, Dorner is showing no sign of relenting.

He complained he had been railroaded out of the department after reporting police brutality by another officer. Dorner also complained of a continuing culture of racism and brutality in the LAPD.

Attacks on other police officers and their families, he said, are "a necessary evil that I do not enjoy but must partake and complete for substantial change to occur within the LAPD and reclaim my name."

"Look your wives/husbands and surviving children directly in the face and tell them the truth as to why your children are dead," Dorner wrote.

Such a chilling warning prompted Los Angeles police to set up 40 protective details in an effort to safeguard people listed in Dorner's letter, Beck said.

The chief acknowledged that this effort was taxing the department, which has been placed under tactical alert, meaning all officers must stay on duty.

"It's extremely, extremely manpower intensive," Beck said. "But the safety of my employees, people that come on the job to protect the lives of strangers, is extremely important to me. And I will expend whatever resource is necessary."

KABC: Former cop shoots three officers

CNN's AnneClaire Stapleton, Sara Weisfeldt, Barbara Starr, Pete Janos, Mallory Simon and Deanna Hackney contributed to this report.

Read More..

Ex-LA cop, murder suspect sent parcel to Anderson Cooper

In this image provided by the Irvine, Calif., Police Department via The Orange County Register, former Los Angeles police officer Christopher Jordan Dorner is shown. Dorner is a suspect in the killings of Monica Quan and her fiance, Keith Lawrence, who were found shot to death in their car at a parking structure Sunday night. (AP Photo/Irvine Police Department via The Orange County Register) / AP/Irvine Police Department via Orange County Register

LOS ANGELES Law enforcement officials are inspecting a package CNN's Anderson Cooper received from a former Los Angeles police officer who allegedly killed three in a shooting spree.

CNN spokeswoman Shimrit Sheetrit said Thursday that a parcel containing a note, a DVD and a bullet hole-riddled memento were sent by Christopher Dorner and addressed to Cooper's office.

LAPD Cmdr. Andrew Smith says LAPD robbery-homicide detectives will inspect the package for clues.

The package arrived Feb. 1, days before the first two killings Dorner is accused of.

It contained a note on it that read, in part, "I never lied."

Dorner was fired from the LAPD in 2008 for making false statements.

A coin typically given out as a souvenir by the police chief was also in the package, and riddled with bullet holes.

Read More..

Cop Shooting Rampage: Manhunt on Mountain

The truck owned and driven by suspected cop killer Christopher Dorner during his alleged rampage through the Los Angeles area was found deserted and in flames on the side of Bear Mountain, Calif., this afternoon -- with tracks in the snow leading away from the vehicle.

The San Bernadino Sheriff's Department confirmed the truck was Dorner's, but said at a news conference this evening that the tracks around the truck did not lead to him.

Personnel from several departments and teams of dogs continued to search the area near Big Bear Lake, about 80 miles east of Los Angeles, including door-to-door searches of cabins located there, officials said.

Dorner, a former Los Angeles police officer and Navy reservist, remained on the loose.

"He could be anywhere, at this point, and that's why we're searching door to door," San Bernardino County Sheriff John McMahon said.

He added that the search would continue as long as it was possible. However, a snowstorm was forecast for the area.

Dorner was believed to have killed one police officer and injured two others early this morning in Riverside, Calif. He was also accused of killing two civilians on Sunday. And he allegedly released an angry "manifesto" airing grievances against police and warning of coming violence toward cops.

Read More About Chris Dorner's Allegations Against the LAPD

Heavily armed officers spent much of Thursday searching for signs of Dorner, investigating multiple false leads into his whereabouts and broadcasting his license plate and vehicle description across the California Highway System.

Christopher Dorner: Ex-Cop Wanted in Killing Spree Watch Video

Engaged California Couple Found Dead in Car Watch Video

Missing Ohio Mother: Manhunt for Ex-Boyfriend Watch Video

Around 12:45 p.m. PT, police responded to Bear Mountain, where two fires were reported, and set up a staging area in the parking lot of a ski resort. They did not immediately investigate the fires, but heavily armed SWAT team members eventually descended onto Bear Mountain from a helicopter manned with snipers to investigate and reached the truck.

Also today, CNN's Anderson Cooper said Dorner had sent him a package at his New York office that arrived on Feb. 1, though Cooper said he never knew about the package until today. It contained a DVD of court testimony, with a Post-It note signed by Dorner claiming, "I never lied! Here is my vindication."

It also contained a keepsake coin bearing the name of former Los Angeles Police Chief William J. Bratton that came wrapped in duct tape, Cooper said. The duct tape bore the note, "Thanks, but no thanks Will Bratton."

Bratton told Cooper on his program, "Anderson Cooper 360," that he believed he gave Dorner the coin as he was headed overseas for the Navy, Bratton's practice when officers got deployed abroad. Though a picture has surfaced of Bratton, in uniform, and Dorner, in fatigues, shaking hands, Bratton told Cooper he didn't recall Dorner or the meeting.

PHOTOS: Former LAPD Officer Suspected in Shootings

Police officers across Southern California were on the defensive today, scaling back their public exposure, no longer responding to "barking-dog calls" and donning tactical gear outdoors.

Police departments have stationed officers in tactical gear outside police departments, stopped answering low-level calls and pulled motorcycle patrols off the road in order to protect officers who might be targets of Dorner's alleged rampage.

"We've made certain modifications of our deployments, our deviations today, and I want to leave it at that, and also to our responses," said Chief Sergio Diaz of the police department in Riverside, Calif., where the officers were shot. "We are concentrating on calls for service that are of a high priority, threats to public safety, we're not going to go on barking dog calls today."

Sgt. Rudy Lopez of the Los Angeles Police Department said Dorner is "believed to be armed and extremely dangerous."

Early Thursday morning, before they believe he shot at any police officers, Dorner allegedly went to a yacht club near San Diego, where police say he attempted to steal a boat and flee to Mexico.

He aborted the attempted theft when the boat's propeller became entangled in a rope, law enforcement officials said. It was then that he is believed to have headed to Riverside, where he allegedly shot two police officers.

"He pointed a handgun at the victim [at the yacht club] and demanded the boat," said Lt. David Rohowits of the San Diego Police Department.

Police say the rifle marksman shot at four officers in two incidents overnight, hitting three of them: one in Corona, Calif., and the two in Riverside, Calif.

Read More..

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China bans ads on gift-giving to officials: media

BEIJING: China has banned ads that encourage giving luxury gifts to authorities, state media said on Thursday, the latest push against official extravagance since new leaders took charge vowing better governance.

The ban came ahead of the Lunar New Year holiday on Sunday, as part of a high-profile campaign against government waste and corruption launched after Xi Jinping and others took over the ruling Communist Party in November.

Offering presents to authorities to curry favour is a widespread practice in China, and one of many targets in a party directive in December that also outlined restrictions on splashy banquets, travel and government cars.

"Some commercials broadcast on some channels support a culture of gift giving to superiors that include luxury watches, rare stamps and gold coins," the Global Times reported, citing the State Administration of Radio, Film and Television (SARFT).

"This has spread incorrect values and help create a bad social ethos," it quoted SARFT as saying, adding that it also urged more public service advertisements promoting "Chinese traditions and civilised lifestyles", calling radio and TV "important cultural and ideological strongholds".

The paper quoted television company employees saying that the ban was on particular types of promotions, rather than on product types.

The China Daily described the affected advertisements as those suggesting goods were "must-have items for superiors".

It quoted Zhang Zhian, a communications academic at a university in Guangzhou, saying that choosing gifts was "always a headache" for him when he returns home for the New Year holiday.

"The easiest solution is to choose the gift they all know, which is often one that is heavily advertised," he said. "Although many people would regard the content of ads that promote products as a proper gift as silly, they re-inforce the notion of gift-giving."

State media have in recent months reported widely on decisions by official bodies from the military to local governments to ditch red carpets, floral arrangements and other expenditures as part of the nationwide campaign.

- AFP/xq

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Shoes hurled at Iranian president during Egypt visit

From Adam Makary, for CNN

updated 7:06 PM EST, Wed February 6, 2013

STORY HIGHLIGHTS

• This is the first visit to Egypt by an Iranian president in more than 30 years


• Prosecutor's office: Four men are out on bail after allegedly throwing the shoes


• Officials say the men are Salafis, who have accused Iran of financing Shiites

Cairo (CNN) -- During a historic trip to Egypt, Iranian President Mahmoud Ahmadinejad was greeted by a group of men who hurled shoes at him -- a major insult in the Muslim world.

A video posted by the Anadolu news agency shows a smiling Ahmadinejad shaking hands with a crowd of supporters in Cairo late Tuesday when at least one man threw a shoe toward him. Other men also threw shoes at Ahmadinejad, the Egyptian public prosecutor's office said.

"You killed our brothers!" one of the assailants shouted, according to Anadolu. The agency said the man's shoe struck a security guard.

The men behind the attack were four Salafis, the prosecutor's office said.

Salafis follow the Sunni Muslim doctrine and oppose the idea of Shiite Muslims engaging in any political activity in Egypt. They have accused Iran of financing Shiites to spread the Shia doctrine in Egypt, which has a Sunni majority.

The four men were released on bail for 500 Egyptian pounds ($75) each, the prosecutors' office said.

Ahmadinejad's visit to Egypt is the first by an Iranian president in more than 30 years.

He was in Cairo visiting the Grand Sheikh of Al Azhar, Ahmed el-Tayeb. The Al-Ahram news agency said Ahmadinejad also visited the historic Al-Hussein mosque.

The mosque was built in 1154 and it is named after the Prophet Mohammed's grandson, Hussein Ibn Ali. Shiites believe that the Fatimid, Egypt's Shiite rulers, buried his head there and built the mosque as a shrine for Hussein, the first Shiite martyr, who was killed and beheaded in the battle of Karbala in 680.

Why shoe throwing is 'incredibly offensive'

CNN's Saad Abedine contributed to this report.

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Celebrities call on Congress to back gun control measures

Tony Bennett, Chris Rock, Adam Scott, Amanda Peet and other celebrities today joined joined a coalition of elected officials, law enforcement officers, physicians and others on Capitol Hill in support of President Obama's plan to reduce gun violence.

Play Video

Celebrities team up for gun control action

"I still haven't gotten over Connecticut," Bennett said, referring to the mass shooting at Sandy Hook Elementary School in Newtown, Conn., that left 20 children and seven adults dead.

In the wake of that tragedy, Mr. Obama has called on Congress to pass a series of gun control measures, such as a ban on assault weapons and universal background checks for gun purchasers. He has also gone on the road to build public support for his agenda.

"I'm just here to support the president of the United States," comedian Chris Rock said. "The president and the first lady are kind of like the mom and the dad of the country, and when your dad says something, you listen. And when you don't, it usually bites you in the ass later on."

The celebrities were joined by public figures such as Kerry Kennedy, the late Robert Kennedy's daughter.

"I was four years old when my uncle, President Kennedy, was killed by a man with a gun. I was eight years old when my father, too, was gunned down," she said. "It is almost impossible to describe the pain of losing your father to a senseless murder, or the anger and fear of knowing that murder might have been avoided if only our leaders had acted to stop the violence."

While several celebrities were on Capitol Hill today to back the president, not everyone in Hollywood supports his agenda. Actor Bruce Willis, star of the violent "Die Hard" movies, told the Associated Press he's against new gun control laws that could infringe on rights guaranteed by the Second Amendment. He also dismissed any link between Hollywood gun violence and real-life gun violence.

Read More..

Armstrong May Testify Under Oath on Doping

Facing a federal criminal investigation and a deadline that originally was tonight to tell all under oath to anti-doping authorities or lose his last chance at reducing his lifetime sporting ban, Lance Armstrong now may cooperate.

His apparent 11th-hour about-face, according to the U.S. Anti Doping Agency (USADA), suggests he might testify under oath and give full details to USADA of how he cheated for so long.

"We have been in communication with Mr. Armstrong and his representatives and we understand that he does want to be part of the solution and assist in the effort to clean up the sport of cycling," USADA CEO Travis T. Tygart said in a written statement this evening. "We have agreed to his request for an additional two weeks to work on details to hopefully allow for this to happen."

Neither Armstrong nor his attorney responded to emails seeking comment on the USADA announcement.

The news of Armstrong's possible and unexpected cooperation came a day after ABC News reported he was in the crosshairs of federal criminal investigators. According to a high-level source, "agents are actively investigating Armstrong for obstruction, witness tampering and intimidation" for allegedly threatening people who dared tell the truth about his cheating.

Lance Armstrong Under Criminal Investigation Watch Video

Lance Armstrong Breaks Down: Question Pushes Cyclist to Brink Watch Video

Lance Armstrong Shows His Emotional Side With Oprah Winfrey Watch Video

The case was re-ignited by Armstrong's confession last month to Oprah Winfrey that he doped his way to all seven of his Tour de France titles, telling Winfrey he used performance-enhancing drugs throughout his career and then lied about it. He made the confession after years of vehement denials that he cheated.

READ MORE: Armstrong Admits to Doping

READ MORE: Lance Armstrong May Have Lied to Winfrey: Investigators

WATCH: Armstrong's Many Denials Caught on Tape

If charges are ultimately filed, the consequences of "serious potential crimes" could be severe, ABC News legal analyst Dan Abrams said -- including "possible sentences up to five, 10 years."

Investigators are not concerned with the drug use, but Armstrong's behavior in trying to maintain his secret by allegedly threatening and interfering with potential witnesses.

Armstrong was previously under a separate federal investigation that reportedly looked at drug distribution, conspiracy and fraud allegations -- but that case was dropped without explanation a year ago. Sources at the time said that agents had recommended an indictment and could not understand why the case was suddenly dropped.

"There were plenty of people, even within federal law enforcement, who felt like he was getting preferential treatment," said T.J. Quinn, an investigative reporter with ESPN.

The pressures against Armstrong today are immense and include civil claims that could cost him tens of millions of dollars.

Armstrong is currently serving a lifetime ban in sport handed down by the U.S. Anti-Doping Agency, and today was the deadline he was given to cooperate under oath if he ever wanted the ban lifted.

READ MORE: 10 Scandalous Public Confessions

PHOTOS: Olympic Doping Scandals: Past and Present

PHOTOS: Tour de France 2012

ABC News' Michael S. James contributed to this report.

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