The Paralympic Committee said it's investigating 35 "disappearing positive samples" among disabled Russian athletes. The committee plans to announce by Aug. 1 whether it will ban Russia.
More than 20 athletes who won Olympic medals in Beijing are among those implicated. The new findings nearly double the number of implicated athletes from those games.
The International Olympic Committee said it would weigh collective punishment versus "the right to individual justice." This comes a day after the World Anti-Doping Agency called for a blanket ban.
"The findings of the report show a shocking and unprecedented attack on the integrity of sport and on the Olympic Games," IOC President Thomas Bach says of a WADA investigation.
The Russian scandal is a hot topic at the U.S. track and field Olympic Trials. Some feel individual Russian athletes should be allowed to compete if they're clean, others support a blanket ban.
After the retesting of samples from the 2008 Beijing Olympics, dozens of athletes from six sports could be banned from the 2016 Games in Rio, the International Olympic Committee said.
The latest WADA report finds that the International Association of Athletics Federations (IAAF), track and field's world governing body, helped organize and enable doping and corruption.
The case centers on doping violations by Russian long-distance runner Lilya Shobukhova "and the exaction of monies from her as the price to pay for enabling her" to compete.