A Russian court formally charged the four main suspects in Friday’s attack on the concert hall with terrorism this Sunday. Moscow Crocus City Hall which has left 137 dead according to the provisional balance provided by the authorities.

The authorities presented the suspects in court this Sunday, who have been sent to preventive detention. The accused have been identified as Dalerjon Barotovich Mirzoev, Saidakrami Murodali Rachabalizoda, Shamsidin Fariduni –who have already admitted their guilt– and Muhammadsobir Fayzov.

The Moscow court has held its hearings behind closed doors to maintain the secrecy of the investigation and has decided to choose preventive measures in the form of detention until May 22 while awaiting trial. The four defendants, who have used Tajik language translation services, showed signs of injuries, especially bruises on their faces.

The last of them to testify, Fayzov, has been transferred to the courtroom in a medical stretcher, accompanied by emergency servicesas reported by the Russian news agency Interfax.

The attack on the concert hall

On Friday some men broke into the concert hall in the Russian capital and shot at those present. Later, they opened fire on the building. The Russian Government has reported on the arrest of eleven peopleincluding the four directly involved in the attack, which has been claimed by Islamic State.

The attack on Crocus City Hall is in the worst terrorist attack in the contemporary history of the Russian capitalabove the crisis of the kidnapping, by Chechen separatists, of the Dubrovka theater in 2002, an attack that left 132 hostages dead after an unmitigated intervention by the Russian security forces.