TerrorismRussian FederationRussia holds day of mourning after concert hall attack02:28This browser does not support the video element.TerrorismRussian FederationNita Blake-Persen03/24/2024March 24, 2024Authorities are continuing to scour the remains of the venue, which gunmen set alight after their shooting rampage. The so-called Islamic State has claimed responsibility, but the Kremlin has tried to link the attack to Ukraine.Copy linkAdvertisement