Nikita Kamaev, the former executive director of Russia's anti-doping agency (Rusada), died after suffering from a heart attack just two months after resigning from his post, Russian news agency TASS reported Sunday. The news was given out to the local media by former general director of the scandal-hit agency Ramil Khabriev.

"It looks like an extensive infraction," TASS quoted Khabriev as saying. "He complained of heart ache after a skiing session. He has never complained about heart problems, at least to me. Maybe his wife knew about such problems."

In November, the International Association of Athletics Federations suspended Russia indefinitely from track-and-field competition after a World Anti-Doping Agency-commissioned report detailed evidence of systemic, state-sponsored doping among Russian athletes. The All-Russia Athletics Federation (ARAF), the Moscow anti-doping laboratory, the RUSADA and the Russian Sports Ministry were all involved in the doping scandal.

In December, all of RUSADA’s top executives, including Kamaev and Khabriev, resigned from their posts.