PHOTO: Muhammadsobir Fayzov, wheeled in on a stretcher to court, is one of the terrorists arrested for shooting Russians in Crocus City Hall in Krasnogorsk, Moscow, during a concert

Information reaching Kossyderrickent has it that Muhammadsobir Fayzov, wheeled in on a stretcher to court, is one of the terrorists arrested for shooting Russians in Crocus City Hall in Krasnogorsk, Moscow, during a concert.

As four suspects were charged in the deadly terrorist attack on a concert at Moscow’s Crocus City Hall, Russia’s ambassador to the United States claimed that the U.S. administration didn’t pass “concrete information” through the Russian Embassy in Washington about possible preparations for a terror attack.

Russian investigators said the attack killed at least 137 people, including three children, and injured 182 others. At least 101 of the victims were being treated in hospitals on Sunday, Russian officials said.

“This atrocity is a senseless, unimaginable cruelty,” band leader Edmund Shklyarsky said.

Authorities raised the number of injured to 180 people, according to TASS. They also said that at least three of those killed were children.

Heavy equipment was seen at the concert hall, clearing debris and dismantling structures damaged in a fire that erupted after the shooting, which according to authorities was carried out by four camouflaged gunmen at the concert hall. The Islamic State (IS) militant group later claimed responsibility for the attack.

Russian authorities identified the two suspects charged in Friday’s attack as Dalerjon Mirzoev and Rachabalizod Saidakrami Murodali, the press services of the Basmanny Court of Moscow told the Russian news agency Interfax on Sunday.

The suspects are charged with committing a terrorist attack that resulted in the death of a person as part of an organized group, Interfax reported. The suspects are under detention, but investigators are formally asking for their arrest.

The four men are among 11 people that Russian authorities said they arrested in connection with the attack on March 22 at the Crocus City Hall in the city of Krasnogorsk in the Moscow region.

Earlier on March 24, Russia observed a national day of mourning for the victims of the attack, which also injured more than 180 people and left survivors with stories of narrow escapes and the desperate measures they took to get away.

Flags were lowered to half-staff across the country as Russians placed flowers at makeshift memorials. Entertainment events were canceled as were entertainment programming and advertising on television.