Ten people died after a private jet crashed in Russia's Tver region, north of Moscow, TASS news agency reported on Wednesday, citing the emergencies ministry.
Russian mercenary chief Yevgeny Prigozhin was listed as a passenger on the jet which crashed, TASS said, citing Rosaviatsia, Russia's aviation authority.
However, there was no confirmation that Prigozhin was physically on board.
The Embraer aircraft, en route from Moscow to St Petersburg, was carrying seven passengers and three crew.
"An investigation has been launched into the Embraer plane crash that occurred tonight in the Tver region. According to the passenger list, among them is the name and surname of Yevgeny Prigozhin," Rosaviatsia said.
Russia's emergency situations ministry said that 10 people had been on board, including three crew members.
According to preliminary information, everyone on board had been killed, it added.

Kuwait air defences deal with Iranian missile, drone attacks
US and Iran exchange attacks as lull in war appears over
Malta court clears businessman over murder of investigative journalist
Kuwait confirms no injuries after Iranian drone hits residential complex
Nepal flood rescue hopes dim as China restores access to Tibet disaster zone
At least 21 die in bus accident in Egypt's South Sinai, ministry says
Defendant pleads not guilty in Charlie Kirk capital murder case
Nepal flood death toll crosses 1,000, rescuers reach remote areas
