More than 1000 Russian athletes, including Olympic medalists, are implicated in the McLaren report on Russian state-sponsored doping.

The report commissioned by the World Anti-Doping Agency (WADA) says that athletes competing in summer, winter, and paralympic sports were either involved directly, or gained an advantage from a state-sponsored doping programme, dating back to 2011.

The author of the report, the Canadian sports lawyer Professor Richard McLaren, said that the “medal-winning conspiracy” continued after the Sochi Winter Olympics in 2014.

This is the second part of a report giving more details of an elaborate state-sponsored doping scheme operated by Russia, first revealed in July.

London Olympics ‘corrupted’

More than 30 sports were involved, the report says, in concealing positive doping samples. It claims there was a systematic cover-up, which was refined at the 2012 Olympics in London, as well as the 2013 World Athletics Championships and 2014 Sochi Winter Olympics.

Professor McLaren said there was evidence that more than 500 positive results were reported as negative, including well-known and top-level athletes whose positive results were automatically falsified.

No Russian athlete tested positive at the London Olympics, where Russia won dozens of medals.

“The Russian team corrupted the London Games on an unprecedented scale,” McLaren said.

The first part of the report, published in July, found Moscow had concealed hundred of positive doping tests in many sports and led to a partial ban of Russian athletes competing in the Rio Olympics this year.

However the International Olympic Committee rejected a blanket ban and let individual international sports federations decide which athletes should be allowed to compete.

Russian officials have dismissed the latest report as the work of only one individual.