Vladimir Putin is facing a major military crisis after Russian mercenary leader Yevgeny Prigozhin declared war on Moscow’s own defense ministry, claiming Kremlin officials had killed thousands of his soldiers.

In a statement issued Friday night, the FSB security agency said it had “legally and reasonably begun criminal proceedings” against the Wagner Group warlord “for the organization of armed insurrection.”

Prigozhin, meanwhile, claimed he had pulled his troops back from Ukraine and into Russia’s Rostov, and vowed: “If anyone gets in our way, we will destroy everything!”

The feud between Prigozhin and Russia’s ministry of defense has been building for months but now appears to have boiled over.

According to Russian state media, Kremlin spokesperson Dmitry Peskov said that Putin is aware of the rapidly unfolding situation and “all necessary measures are being taken.”

“Prigozhin’s statements and actions are actually the calls for the beginning of an armed civil conflict on the territory of Russia and are a ‘stab in the back’ for Russian servicemen,” officials added.

The move comes after Prigozhin accused Defense Minister Sergei Shoigu of having hidden “colossal” failings on the battlefield from Putin, claiming that 2,000 Wagner men were killed as a result of strikes ordered by the Russian Ministry of Defense.

In response to Prigozhin’s allegations, Moscow issued a strong denial and a procession of generals have lined up to urge Wagner fighters to stand down.

In one video appeal, Lieutenant General Vladimir Alekseev, first deputy chief of the general staff of the armed forces, said Prigozhin does not have the authority to give orders. “This is a state coup,” he insisted, “come to your senses!”

Meanwhile, the Deputy Commander of Russian forces in Ukraine Sergei Surovikin — known as “General Armageddon” — urged Wagner to hold its positions and not to turn on its own allies. “Stop the columns, return them to the points of permanent deployment,” he pleaded.

Rolling the dice

Earlier Friday, the Wagner Group founder questioned Moscow’s rationale for launching its invasion of Ukraine, saying that “the Armed Forces of Ukraine were not going to attack Russia with NATO,” and that “the war was needed for a bunch of scumbags to triumph and show how strong of an army they are.”

In a bombastic video statement he called the Russian military leadership “evil” and vowed to march for “justice,” threatening anyone who stood in his way.

In a second message released on his Telegram channel in the early hours of Saturday morning, Prigozhin said that “at the current time, we are entering Rostov,” in Russia, adding that conscripts had been sent to turn Wagner Group fighters back. However, he went on to claim, those guarding the frontier had greeted his troops with open arms.

“If anyone gets in our way, we will destroy everything!” Prigozhin vowed.

Russian state media said checkpoints have been erected in Rostov-on-Don, close to the souther border with Ukraine. At the same time, unnamed officials told news agency TASS that security has been tightened in Moscow with national guard units deployed to keep the peace. Unverified videos purport to show armored vehicles parked on the streets of the capital.