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.

A blast in an upscale residential block in Moscow killed one person and wounded four others on Monday morning, Russian news agencies reported, citing emergency officials. Those wounded in the blast, the cause of which was not revealed,

Armen Sargsyan, the leader of a paramilitary unit wanted by Ukraine, died from his injuries following an explosion on Monday morning.