Russia's most powerful mercenary, Yevgeny Prigozhin, was on board a plane that crashed on Wednesday evening north of Moscow with no survivors, the Russian authorities said, two months to the day after he led an abortive mutiny against the army's top brass.

There was no immediate official comment from the Kremlin or the Defense Ministry on the fate of Prigozhin, head of the Wagner mercenary group and a self-declared enemy of the army's leadership over what he argued was its incompetent prosecution of Russia's war in Ukraine.

A Telegram channel linked to Wagner, Grey Zone, pronounced him dead, however, and hailed him as a hero and a patriot who it said had died at the hands of unidentified people it called "traitors to Russia."