Russia observes national day of mourning after Moscow concert hall massacre

Russia observed a national day of mourning on Sunday as investigators said the death toll from Friday's massacre in a concert hall near Moscow had risen to at least 137, making it the deadliest attack in Europe to have been claimed by the Islamic State (IS) group.

Russia observes national day of mourning after Moscow concert hall massacre
Russia observed a national day of mourning on Sunday as investigators said the death toll from Friday's massacre in a concert hall near Moscow had risen to at least 137, making it the deadliest attack in Europe to have been claimed by the Islamic State (IS) group.