Former Russian anti-doping chief dies

MOSCOW, Feb. 15 (UPI) -- A former executive director of Russia's Anti-Doping Agency died after complaining of chest pains while cross-country skiing at his home on Monday.

Nikita Olegovich Kamaev, 52, is the second former offical of RUSADA to have died since November, when a scathing World Anti-Doping Agency report said the Russians systematically helped athletes use and cover up banned substances for world and Olympic competition.

RUSADA was suspended and all Russian athletes were indefinitely banned by the International Association of Athletics Federations, the ruling body of international sports.

The Russian government called the accusations in the report "groundless."

Kamaev and the rest of the agency's leadership resigned in December.

The agency said his cause of death was presumably a heart attack.

"We will remember Nikita Olegovich as an experienced, intelligent and highly professional leader, who succeeded in fostering a friendly and supportive working environment in the agency," said a statement from RUSADA.

The agency's founding chairman, Vyacheslav Sinev, died Feb. 3. The cause of his death has not been released.