During the Left SR uprising, Lenin began to doubt Muravyov’s loyalty, ordering the Revolutionary Military Council of the eastern front to secretly monitor his actions: “Report Muravyov’s statement about the rebellion of the Left Socialist Revolutionaries. Continue close monitoring ”. Muravyov rebelled, having received news from Moscow and fearing arrest due to Bolshevik suspicions of disloyalty. Muravyov himself, during the events, declared that he "acted independently, but the Left SR Central Committee knows everything." On the night of July 9–10, Muravyov, having left the front headquarters in Kazan, without the knowledge of the military council of the front, loaded two regiments loyal to him onto steamers and left the city. He even managed to transfer the local communist squad from Simbirsk to Bugulma by order of the front.