Ex-teammate says Lance Armstrong injected EPO

May 19, 2011 - 6:59 PM

NEW YORK (AP) — A former teammate of Lance Armstrong has told CBS News that he used performance-enhancing drugs with the seven-time Tour de France winner to cheat in cycling races, including the tour.

Tyler Hamilton says Armstrong took a blood-booster called EPO in the 1999 Tour and before the race in 2000 and 2001. Armstrong won the race every year from 1999-2005.

Armstrong has steadfastly denied doping and has never failed a drug test.

Federal investigators are probing whether Armstrong and his former U.S. Postal team engaged in a systematic doping program, which he denies.