But Russia's Sports Minister Vitaly Mutko was barred from attending the Games and the IOC ordered a disciplinary commission to look into his ministry's role in what a report called a "state-dictated failsafe system" if drug cheating.
The IOC executive held emergency talks today on a bombshell inquiry commissioned by the World Anti Doping Agency (WADA) into the state doping at the Sochi Winter Olympics and other major events in Russia.
The IOC said it would not give backing to any international events in Russia because of the scandal but had to put back a decision on whether to bar Russia from the Rio Games which start August 5.
But the IOC said it "will explore the legal options with regard to a collective ban of all Russian athletes for the Olympic Games 2016 versus the right to individual justice."
More From This Section
The Olympic leadership said it will also have to wait for a Court of Arbitration for Sports decision ruling Thursday on an appeal by 68 Russian athletes against an IAAF ban from competition.
- Russian minister barred -
Lead investigator Richard McLaren said Monday he had conclusive evidence that the four year doping scheme was directed by the sports ministry with the FSB intelligence agency.
The IOC said it will not grant any Rio accreditation "to any official of the Russian Ministry of Sport or any person implicated in the (McLaren) report."
That includes Mutko, who has denied that the government directed the doping programme.
Mutko has already suspended five top deputies, including his number two Yury Nagornykh, described as the point man for running the cheating scheme.
WADA, the German Olympic committee and anti-doping bodies across the globe have backed calls for Russia's outright ban from Rio.
But the Association of Summer Olympic Federations and other groups have urged caution, pointing to the ethical issues of punishing athletes who have never failed drug tests.
The International Association of Athletics Federations has already barred Russian track and field contenders from Rio after a inquiry into widespread state-sponsored doping in the sport.
The CAS will rule Thursday on whether the IAAF had grounds to impose a blanket ban on a national federation, since such a suspension inevitably punished athletes with no positive drug test on their record.
- Reanalysis, event freeze -
============================
IOC executives also ordered a re-analysis of all samples by Russian athletes taken at the 2014 Winter Olympics, vowing punishment against anyone who helped competitors cheat.
Because the Sochi Games are so tainted, the IOC said it would not give backing to any international sports events in Russia.
It called on "all International Olympic Winter Sports Federations to freeze their preparations for major events in Russia."
This includes world championships and World Cups, the IOC said, calling or winter federations "to actively look for alternative organisers."
Senior sports and political leaders in Moscow have also questioned the credibility of McLaren's key witness, the former boss of Russia's anti-doping lab Grigory Rodchenkov, who admits he was central to the cheating scheme.
Rodchenkov is currently in hiding in the United States and is wanted by Russia.
McLaren said his team uncovered forensic evidence that proved Rodchenkov's claims that Moscow set up a "failsafe" cheating system following the country's poor performance at the 2010 Winter Games in Vancouver.