 In May 2011, former Armstrong teammate Tyler Hamilton told CBS News that he and Armstrong had together taken EPO before and during the 1999, 2000, and 2001 Tours de France.Armstrong's attorney, Mark Fabiani, responded that Hamilton was lying.The accompanying "60 Minutes" investigation alleged that two other former Armstrong teammates, Frankie Andreu and George Hincapie, have told federal investigators that they witnessed Armstrong taking banned substances, including EPO, or supplied Armstrong with such substances.