The Islamic State – Khorasan Province (IS–KP), a South-Central Asia-based regional affiliate of the Islamic State, claimed responsibility in a statement through the Amaq News Agency shortly after the attack.
The Islamic State have claimed responsibility for the attack on the Crocus City Hall on the outskirts of Moscow. The full statement posted on its Telegram account reads: Islamic State fighters attacked a large gathering of Christians in the city of Krasnogorsk on the outskirts of the Russian capital, Moscow, killing and wounding hundreds and causing great destruction to the place before they withdrew to their bases safely.