Moscow publishes faces of those suspected of Friday's attack at a concert hall

The four detainees, suspected of Friday's attack on a concert hall in Moscow, have been placed in custody for at least two months. Dalerdon Barotovich Mirzoyev, Saidakram Murodali Rachabalizoda, Shamsidin Faridun and Muhammadsoir Fayzov are accused of acts of terrorism.

The court said in a statement that Mirzoyev, a citizen of Tajikistan and Rachabalizoda, whose nationality has not been disclosed, have pleaded guilty. All four will be held in custody until at least 22 May, the court added.

The Islamic State has claimed responsibility for Friday's attack on Crocus City Hall and posted videos from the site of the event. Russian officials have claimed, without evidence, including Ukraine. But Kiev says the claim is “absurd”.