Russian President Putin said on Saturday (March 23) that the four gunmen who killed 115 people in the Moscow Concert Hall have been arrested and vowed to severely revenge all those involved in the planning attack.

Agence France -Presse quoted Putin: "All four terrorists who shot and kill people have been detained. They were going to Ukraine at the time ... We will find out and punish everyone who supports terrorists and prepares to attack."He said preliminary information showed that some people in Ukraine were ready to let them enter Ukraine from Russia.

Putin said in a TV speech nationwide: "I speak to you about this bloody, brutal terrorist act today.The day is 'National Mourning Day'. "

The Kremlin said that Russia has arrested 11 people, including four suspected shooters in the concert hall.The Russian International Telecommunications Agency quoted the Federal Security Agency that the four suspects were arrested when they went to Russia and the Ukrainian border, and they were in touch with Ukraine.

Ukrainian presidential consultant Podolia stated that Kiev had nothing to do with the attack.Ukraine said it only resisted the Russian army on the battlefield.

The "Fan Red Flower City Hall" concert hall in Klasnosk, the outskirts of Moscow, a shooting event on March 22.The Russian Investigation Commission released a video of law enforcement officials searching for evidence in the concert hall on the 23rd.(Agence France -Presse)

The Russian Investigation Commission said that the deceased of the Moscow's suburbs of the concert hall of the Moscow to 115 .The Ministry of Health of Moscow previously announced that terrorist attacks killed three children.

The "Fan Red Flower City Hall" concert hall in Krasegoosk, the city of Moscow, was Sage and burned.