Flowers along with an image of the owner of private military company Wagner Group, Yevgeny Prigozhin, with the message in Russian — 'In this hell you were the best' — are placed at an informal memorial next to the former "PMC Wagner Center," in St. Petersburg, Russia, on Friday. Associated Press

Dmitri Lovetsky

MOSCOW — Russian authorities Sunday confirmed the death of Wagner Group chief Yevgeny Prigozhin, putting to rest any doubts about whether the wily mercenary leader turned mutineer was on a plane that crashed Wednesday, killing everyone on board.

Genetic testing on the 10 bodies recovered at the crash site “conform to the manifest” for the flight, Russian Investigative Committee spokeswoman Svetlana Petrenko said. Russia’s civil aviation authority had said Prigozhin and some of his top lieutenants were on the list of seven passengers and three crew members.

The committee did not indicate what might have caused the jet to plummet from the sky halfway between Moscow and St. Petersburg.

But the crash’s timing raised suspicions of a possible Kremlin-orchestrated hit, while Prigozhin’s chameleon-like background allowed for speculation that he wasn’t on the plane or had escaped death.

Two months ago, Prigozhin, 62, mounted a mutiny against Russia’s military, leading his mercenaries from Ukraine toward Moscow. Russian President Vladimir Putin decried the act as “treason” and vowed punishment.

Instead, the Kremlin cut a deal with Prigozhin to end the armed revolt, saying he would be allowed to walk free without facing any charges and to resettle in Belarus. Questions remained about whether the former ally of Russia’s leader would face a comeuppance for the uprising that posed the biggest challenge to Putin’s authority of his 23-year rule.

A preliminary U.S. intelligence assessment concluded that an intentional explosion caused the plane to go down. As suspicions grew that Putin was the architect of an assassination, the Kremlin rejected them as a “complete lie.”

One of the Western officials who described the initial assessment said it determined that Prigozhin was “very likely” targeted and that an explosion would be in line with Putin’s “long history of trying to silence his critics.”

Prigozhin’s second-in-command, Dmitry Utkin, as well as Wagner logistics mastermind Valery Chekalov, also were killed in the crash.

The Kremlin offered Prigozhin’s fighters three options: to follow him to Belaruse, retire or enlist in Russia’s army and return to Ukraine.