A private jet crashed in Russia on August 23, killing all 10 people aboard.
Wagner Group mercenary chief Yevgeny Prigozhin was on the passenger list, but it was not immediately clear whether he was on board.
Prigozhin’s fate has been the subject of intense speculation ever since he mounted a short-lived mutiny against Russia’s military leadership in late June.
The Kremlin said the founder of the Wagner private military company, which fought alongside Russia’s regular army in Ukraine, would be exiled to Belarus.
But the mercenary chief has since reportedly popped up in Russia, leading to further questions about his future.
This week, Prigozhin posted his first recruitment video since the mutiny, saying that Wagner is conducting reconnaissance and search activities, and “making Russia even greater on all continents, and Africa even more free”.