Armen Sarkisyan, the Moscow-backed collaborator from Ukraine's Donetsk region, died in the hospital after being injured in an explosion in an elite residential complex in Moscow on Monday, according to Russian state-run outlets.

At least four other people were injured in the blast, which blew off one of the dead military leader’s legs and left his face so mangled that it was difficult at first to identify him,

Armen Sarkisyan, the founder of a separatist battalion fighting in eastern Ukraine, died after an explosion in an apartment complex, according to reports citing the Russian authorities.