Moscow, Five gunmen opened fire on the crowd at the Crocus City Hall in Moscow, the capital of Russia, killing at least 40 people and injuring more than 100. According to AP report, Russia's top security agency says that 40 people have been killed and more than 100 injured in the attack on the Moscow concert hall. Russian officials have confirmed the terrorist attack in Moscow.

According to media reports, Russian National Guards have reached the spot to control the situation. He has also started his campaign to deal with the terrorists. Help of helicopters is also being taken in this operation. More than 50 ambulances have also reached the incident site. The injured have been taken to the hospital.

According to Russian state media, some unidentified people entered the Crocus City Hall and opened fire before the concert began. According to reports, after firing in the hall, a grenade was also attacked.

The attack took place when a crowd of people had gathered at the Crocus City Hall to attend a concert by the famous Russian rock band 'Picnik'. More than 6,000 people can sit in this hall.

At least five people in combat attire entered the concert hall and opened fire. There are also reports of explosion and fire in that building.

No organization has yet taken responsibility for this terrorist attack. Moscow Mayor Sergei Sobyanin has described the attack as a 'huge tragedy'.

Investigation started considering it a terrorist attack
Russia's top investigative agency is investigating the incident of firing, explosion and fire as a terrorist attack. The investigative committee said it had launched a criminal investigation into the allegations, although it did not say who might be behind the attack.

Moscow airport closed
At present, Moscow airport has been closed and the movement of trains has also been stopped. People have also been forbidden from gathering in public places in Moscow.

America had already alerted
According to reports, just a few days ago America had issued an alert regarding the terrorist attack. He had advised his citizens not to go to mass gatherings in Moscow.