Another damning report from Canadian law professor Richard McLaren of Western University in London.

(Adrian Dennis / Getty Images)

This time he details a wide-ranging ‘institutional conspiracy’ that involved over 1,000 athletes across more than 30 sports, including evidence corroborating sample swapping at the 2014 Sochi Winter Olympics.

McLaren, a World Anti-Doping Agency investigator, says the conspiracy involved the Russian Sports Ministry, national anti-doping agency and Russian intelligence service, providing more evidence of state involvement in a large-scale program of cheating and coverups that ran on an ”unprecedented scale” from 2011-15.

”It is imposible to know just how deep and how far back this conspiracy goes.  For years, international sports competitions have unknowingly been hijacked by Russians.  Coaches and athletes have been playing on an uneven field.  Sports fans and spectators have been deceived.  It’s time that this stops.”

Russia’s Deputy Prime Minister, Vitaly Mutko, who was sports minister for the 2012 and 2014 Olympics, says Russia will take legal action in response to the allegations.

He also adds ”it was simply not realistic in Sochi to do what they are accusing us of.”

IOC President Thomas Bach says stiff sanctions will be taken against any athletes and officials implicated in doping.

He favours lifetime Olympic bans.

McLaren’s findings confirm and expanded on much of what was contained in his first report last July.

This one will put pressure on the International Olympic committee to do something ahead of the 2018 Winter Games in Pyeongchang, South Korea.