The former German cyclist Erik Zabel has admitted to having used doping products including EPO from 1996 to 2004.
The sprinter has also admitted to blood doping and using cortisone.
Zabel's admission comes a few days after he was named in a French government report that identified cyclists who had tested positive for EPO during the 1998 Tour de France.
Zabel is a six-time winner of the Tour de France's green jersey competition for best sprinter.
The 43-year-old, who retired in 2008, had previously admitted in 2007 to having taken EPO in 1996, although he said he had stopped using it after one week.
However, now he has finally come fully clean, explaining how he graduated from EPO to blood doping as detection methods improved.
