Last week McLaren denied reports by the head of the Russian Independent Anti-Doping Commission that he had dropped allegations of a state-sponsored doping programme, and insisted he "unequivocally stands by the results" of his investigation.
The New York Times reported on Tuesday that the World Anti-Doping Agency, which regulates drugs in sports and collected evidence of Russia's alleged doping scheme, "has agreed to clear 95 of the first 96 athletes whose cases have been reviewed".
"WADA would expect the Russian authorities to take responsibility for this deliberate system of cheating that was uncovered by the McLaren Investigation - as is stipulated within RUSADA's Roadmap to Compliance - rather than continually shifting the blame onto others", WADA spokesperson Maggie Durand said.
"The available evidence was insufficient to support the assertion of an anti-doping rule violation against these 95 athletes", said WADA director general Olivier Niggli in a report seen by The New York Times. The report does not specify who the athletes are.
Rodchenkov has been forced to leave Russian Federation and is now in the United States. RUSADA was declared "non-compliant" with global sport's anti-doping code in November 2015 in the wake of the report by professor Richard McLaren which uncovered widespread doping in Russian sport.
The news outlet, meanwhile, added citing Rodchenkov's lawyer that the informant "has been willing to cooperate".
"Together, WADA and Richard McLaren prevented us from reaching our life-long goal of participating in the Rio Olympics, the pinnacle of our sport, and we allege that they wrongly associated our names with cheaters and doping." said Mr. Sveshnikov, one of the plaintiffs speaking for all three.
It is claimed that more than 1,000 Russian athletes were involved in a state-sponsored programme.
As a result, Wada recommended all Russian athletes be banned from competing in the Rio Olympics and Paralympics.
Two IOC Commissions are now investigating the affair.