The head of the Russian private military company was on the passenger list of 10 people who died.
UPDATED -- Wagner boss Yevgeny Prigozhin was on a plane that crashed in western Russia killing all on board, according to the country's aviation authority
His name was on the list of those "declared as travelling on board" the plane, along with key Wagner commander Dmitry Utkin
The Russian Emergencies Ministry has said that private aircraft "came down” near the village of Kuzhenkino