Armen Sarkisyan, the Moscow-backed collaborator from Ukraine's Donetsk region, died in 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,

The founder of a pro-Russian militia group in eastern Ukraine, described by authorities in Kyiv as a “criminal mastermind”, has died following a bombing in central Moscow, according to Russian state media.