Moscow's Basmanny District Court on Monday arrested fifth defendant, Dilovar Islomov, in the case related to the deadly attack on the Crocus City Hall concert venue near Moscow, a Sputnik correspondent reported.
"The court approved the investigation’s request and chose a preventive measure against Dilovar Islomov in the form of detention until May 22," a judge said.
On Sunday night, the court arrested Dalerdzhon Mirzoyev, Shamsidina Fariduni, Saidakrami Rachabalizoda and Muhammadsobir Fayzov. All of them were charged with committing a terrorist attack.
According to the Russian authorities, that at least 137 people were killed in the attack on the Crocus City Hall. A Sputnik correspondent who witnessed the attack reported that at least three men in camouflage had broken into the music hall, shooting people point-blank and throwing incendiary bombs.