From Wikipedia….
“Executive director of the Russian Wrestling Federation, Makhmud Magomedov, stated that Saitiev died of cardiac arrest, and Russia's minister of sport Mikhail Degtyarev said Saitiev had been ill, frequently visiting medical centres. Saitiev's widow, Indira, stated Saitiev had fallen out of a second-storey window before his death. Russian outlet Baza [ru] reported that a janitor found Saitiev lying injured on the ground near a residence on Minskaya Street, and called for an ambulance. Baza said Saitiev later died in hospital.”
Crazy that there are such varying reports of his death, but no answers yet. You would think he’s a huge celebrity in Russia and it would be big news. But then again… I guess the media there knows when they have to keep quiet