Shooting in Moscow: what we know about the “bloody attack” which left at least 40 dead in a concert hall. Islamic State group claimed responsibility for the attack.

Russia said it would "destroy" Ukraine's leaders if they were linked to the shooting. All public events planned in Moscow this weekend have been canceled, and an investigation into a “terrorist act” has been opened. The attack by several armed individuals took place in the evening at Crocus City Hall in Krasnogorsk, a suburb near Moscow.