The New York Times is reporting:

Federal prosecutors have intensified their criminal investigation of the cyclist Lance Armstrong since the end of the Tour de France last month. They questioned many of his former associates, including cyclists who have supported and detailed claims that Armstrong and his former United States Postal Service team participated in systematic doping, according to a cyclist who has been interviewed and two others privy to the inquiry.

A former teammate of Armstrong said in a telephone interview Wednesday that he had spoken with investigators. He said he detailed some of his own drug use, as well as the widespread cheating that he said went on as part of the Postal Service team — all of which he said was done with Armstrong’s knowledge and encouragement.

The rider, who has never tested positive for performance-enhancing drugs or methods, asked that his name not be used because investigators advised him not to speak publicly about the information he provided. He has not been called before the grand jury that has been convened in Los Angeles to investigate the case.

Cyclists Said to Back Claims That Lance Armstrong Doped – NYTimes.com