The disgraced American cyclist Lance Armstrong will not agree to be interviewed under oath by the United States Anti Doping Agency.
Armstrong admitted taking performance-enhancing drugs during his seven Tour de France wins in an interview with Oprah Winfrey.
By speaking to Usada, he would have been eligible to have a lifetime ban overturned.
But a statement said he "will not participate in prosecutions... that only demonize selected individuals".
Armstrong was initially given until February 6th to meet Usada officials but was allowed a further two weeks to decide whether to be interviewed.
The Texan's statement, released by his attorney Tim Herman, said he is willing to help with the investigation but will not be interviewed by Usada.