The CEO of the U.S. Anti-Doping Agency says Lance Armstrong did not fully come clean during his interview with Oprah Winfrey earlier this month and he's giving the former cyclist a deadline to tell the truth. Here to break things down for us is our very own Legal Eagle, Paul DerOhannesian.

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UNITED STATES -- The CEO of the U.S. Anti-Doping Agency says Lance Armstrong did not fully come clean during his interview with Oprah Winfrey earlier this month and he's giving the former cyclist a deadline to tell the truth.

Travis Tygart says Armstrong lied several times during the interview. He refutes Armstrong's claim that he didn't take performance enhancing drugs before his 2009-2010 return to cycling.

In a letter to Armstrong, Tygart gave him a deadline of February 6th to come clean in exchange for a possible lessening of his lifetime ban from the sport.

Our Legal analyst Paul DerOhannesian says there were a couple interesting topics left out of the confession.

DerOhannesian said, "Notice he didn’t talk all about who else assisted him and he never talked about his role in distributing any drugs. That's important because the exposure for distributing drugs is much more significant than perhaps possessing them. I think he feared that and that's why he didn't come totally clean."

DerOhannesian says Armstrong also conveniently skirted an eight year anti-doping statute of limitations by saying he hasn't used performance enhancing drugs since 2005.