World Anti-Doping Agency (WADA) chief John Fahey has rejected Lance Armstrong's claim that he did not take performance-enhancing drugs after his seventh and final Tour de France victory in 2005.
Armstrong admitted years of systematic doping in an interview with chat show host Oprah Winfrey but the American maintained he was clean when he made a comeback in 2009, three and a half years after retiring, Stuff.co.nz reports.
However, Fahey told an English newspaper on Friday that the evidence from the United States Anti-Doping Agency (USADA) is that Armstrong's blood tests show variations in his blood that show with absolute certainty he was doping after 2005.
Fahey added that he knew whom to believe between USADA or Armstrong, adding that it struck him that the statute of limitations under US law might be relevant and the American would not want to admit to anything in regards to his comeback that might be picked up under the US criminal code.
Armstrong, stripped of his Tour wins and banned for life last year after a USADA investigation, said that if asked to participate in a truth and reconciliation commission he would be the first man through the door.
But Fahey responded by saying Armstrong had recently declined to give evidence to USADA under oath, branding the banned cyclist as a cheat. (ANI)