Four Russians who won gold medals at the Sochi Olympics were on steroids at the time, a whistleblower who previously provided evidence of Russian track and field doping said, according to CBSNews.com.
The report doesn’t name the athletes or their sports. Nor does it say any of the athletes failed drug tests.
A “60 Minutes” piece on Russian doping will air Sunday on CBS between 7 and 8 p.m. ET. An excerpt will air on CBS Evening News on Friday between 6:30 and 7 ET.
The whistleblower is Vitaly Stepanov, a former Russian anti-doping official who, along with wife and former Russian 800m runner Yulia Stepanova, provided a 2014 German TV documentary undercover footage and evidence of Russian track and field doping.
Russia’s track and field federation was banned from competition in November. The suspension could last through the Rio Olympics.
The “60 Minutes” report cites Stepanov learning of Russian cheating at the Sochi Olympics from Grigory Rodchenkov, former director of a Moscow drug-testing lab that was stripped of its accreditation by the World Anti-Doping Agency in April.
In a November WADA independent commission report, Rodchenkov was alleged to have requested and accepted money to conceal positive drug tests. He immediately resigned.