"Icarus," a film about doping in Russian has won the Oscar for the best documentary. U.S. director Bryan Fogel's film was made with the assistance of Grigory Rodchenkov, the former Moscow anti-doping laboratory director who now lives in the United States.

Fogel dedicated the award to Rodchenkov, whom he described as "our fearless whistleblower who now lives in grave danger."

Rodchenkov, who is under U.S. protection, fled to the United States in 2016 after producing documents obtained during his years as Russia's anti-doping lab director which describe an elaborate ruse by Russia and its athletes to evade doping tests.

Rodchenkov said the evidence supports his allegations that Russia perpetrated a urine-swapping scheme at the 2014 Winter Olympics in Sochi and that the doping scheme extended to Russia's track and field athletes.