Wagner boss Yevgeny Prigozhin was on the passenger list of a private plane which crashed in Russia.
All 10 passengers on board have been killed.
He was believed to be on board the plane.
Grey Zone reported that the jet was shot down by air defences in Tver region, north of Moscow.
The historical monastery of Saint Loukas is burning (video-photos)
BREAKING:
A private jet owned by Prigozhin was just shot down by Russian air defenses over Tver.
Around 10 people onboard have been killed. pic.twitter.com/mUCHws77Y0
— Visegrád 24 (@visegrad24) August 23, 2023
Prigozhin led a failed mutiny against the Russian armed forces in June.
