Reports: Ongoing Terrorist Shootout at Moscow Concert Hall Leaves at Least 100 Casualties

A terrorist attack on the Crocus City concert hall and mall in Moscow, Russia, on Friday night that has reportedly not concluded at press time has left “over 100 casualties,” the Russian outlet RT reported.

Update 4:08PM ET: The Russian FSB security service announced it had documented at least 40 killed and over 100 injured in the attack.

The fire is so large that the Russian government has deployed a water-discharging helicopter to end it and has prepared two more to fly in, according to RIA Novosti.

Videos on social media shared by Russian news outlets – such as RT, Ria Novosti, Sputnik, and others – show panicked concertgoers attempting to hide under seats and the sound of gunfire. Reports indicated that one of the assailants detonated a grenade, causing the ongoing fire.