A shooting incident occurred in a concert hall of Klasorosk, a Russian capital of Moscow.Preliminary statistics from the Russian Federal Security Agency that the shooting had killed at least 40 people and injured more than 100 people.

The Russian Federal Security Agency said on Friday (March 22) that the shooting occurred in the Crocus City Hall in the northwestern "Crookus City" of Northwestern Moscow. At that time, a band was holding a concert.

Russian media reported that the three gunmen in camouflage clothes were unknown. They also threw grenades or burning bombs, causing fires.

Xinhua News Agency reported that there were a large number of police officers on the scene to maintain order, burning fire, strong smoke, and the roof almost collapsed.Firefighters were extinguishing fire, and helicopters flew from the air from time to time.

The fire of the "Crookus City" concert hall is fierce, and the roof is almost collapsed.(Agence France -Presse)

The Russian Emergency Department said that the fire department is rescue the trapped persons and has rescued more than 100 people from the "Crookus City" concert hall.

The Russian Ministry of Foreign Affairs said that the shooting occurred in the "Crookus City" concert hall that day was a terrorist attack.The Russian News Agency reported that the three major airports in Moscow Xieliemejo, Voukovo, Do Momojoto and other strengthened security measures, the airport express security check was upgraded but running normally.

Moscow Mayor Sobiyanin expressed condolences to the family members of the victims, and ordered all the necessary assistance to the wounded.Sobananin subsequently announced that Moscow will cancel all large mass activities this weekend.