Four Russian cross-country skiers have been banned from participating in the Olympic Games for life over the alleged doping use, Russia’s Cross-Country Ski Federation (CCSFR) said on Thursday. 

Maxim Vylegzhanin, Alexei Petukhov, Yevgeniya Shapovalova and Yulia Ivanova were found guilty of violating anti-doping rules by the International Olympic Committee (IOC) investigative commission led by Denis Oswald, the CCSFR said in a statement on its website. 

The athletes get their results achieved during the 2014 Winter Olympic Games in Sochi annulled, the statement said. 

Vylegzhanin won three silver medals during the Sochi Olympics, while three other athletes finished the Games without a medal. 

Earlier this month, two other Russian skiers, Alexandr Legkov and Evgeny Belov, have received lifetime ban from Olympics imposed by the IOC for anti-doping rule violations. 

Legkov was also deprived of his Sochi Olympic gold and silver medals. 

The CCSFR said it will challenge the IOC rule on all the six athletes at the Court of Arbitration for Sport based in Lausanne, Switzerland.