The US Anti-Doping Agency has revealed its evidence against seven-time Tour de France winner Lance Armstrong, saying he was part of the most successful doping conspiracy that cycling has ever seen.
In its 1000-page report, the agency documents testimony from 11 of Armstrong's former team mates.
The 41-year-old has always denied doping allegations, but has not contested the agency's charges.
The agency's chief executive, Travis T Tygart, said there was conclusive and undeniable proof of a team-run doping conspiracy, the BBC reports.
In his statement, Mr Tygart said evidence against Armstrong and his team includes sworn testimony from 26 people, "including 15 riders with knowledge of the US Postal Service Team and its participants' doping activities".
He said the report contains documentary evidence including financial payments, emails, scientific data and laboratory test results that further prove the use, possession and distribution of performance enhancing drugs by Lance Armstrong.
Mr Tygart claimed the team's doping conspiracy was professionally designed to "groom and pressure athletes to use dangerous drugs".
Armstrong, who overcame cancer to return to professional cycling, won the Tour de France from 1999 to 2005. He retired in 2005, but returned in 2009 before retiring for good two years later. He now competes in triathlons.