Standing in front of the bodies of dozens of what he claims are his fighters killed in Russia’s war with Ukraine, the head of the private military company Wagner unleashed an expletive-laden challenge to Russia’s military leadership, blaming their deaths on a lack of support from Moscow, writes CNN.

“We are lacking 70% of the needed ammunition!” Wagner chief Yevgeny Prigozhin says in a video posted on the Telegram messaging app.

Shining a small flashlight on the corpses laying outdoors near what appears to be the front lines of the war, Prigozhin claims they are the casualties of just one day of fighting.

“Shoigu, Gerasimov, where … is the ammunition?” says Prigozhin, calling out Russian Defense Minister Sergei Shoigu and chief of the Russian armed forces Gen. Valery Gerasimov.

“The blood is still fresh,” he says, pointing to the bodies behind him. “They came here as volunteers and are dying so you can sit like fat cats in your luxury offices.”

Prigozhin, whose Wagner mercenary group has taken on a growing role in the Ukraine conflict as Russian forces falter, has been highly visible on the front lines in recent months – where he has claimed credit for territorial gains, particularly in the battles raging around the eastern Ukrainian city of Bakhmut.