World Anti-Doping Agency investigator Richard McLaren has released the second and final part of his report into doping in sport.
McLaren claims more than 1,000 Russian athletes were involved-in or benefited from a doping program between 2011 and 2015.
According to the report which was released at a press conference in London, the doping scheme operated across 30 summer and winter sports, including football.
The report claimed that the state-sponsored scheme included switching and changing samples by opening tamper-proof bottles and numerous other cover-up methods.
Five months ago, the first part of McLaren’s report sparked a crisis within the Olympic movement. It led WADA to recommend that Russia be excluded from the Rio de Janeiro Olympics but the International Olympic Committee rejected calls for such a ban.
In a statement on Thursday, Russia’s sports ministry insisted on the absence of a state-sponsored doping program in the country and added that it would carefully examine the report.