At least 40 killed in attack at concert hall near Moscow, state news agency says

Three gunmen in combat fatigues burst into a large concert hall in Moscow and fired automatic firearms at the crowd, killing 40 people and injuring more than 100, according to multiple Russian state media outlets.

Russian news information said the attackers also used explosives, triggering a massive combustion at the Crocus City Hall on the western border of Moscow on Friday.