The service added Dalerdzhon Mirzoyev, Shamsidin Fariduni, Saidakrami Rachabalizoda and Muhammadsobir Fayzov to the list of terrorist and extremists, according to its registry.
A shooting occurred on March 22 in the Crocus City Hall concert venue in the city of Krasnogorsk, just outside Moscow, followed by a massive fire. A Sputnik correspondent reported that a number of gunmen in camouflage broke into the music hall, shooting people point-blank and throwing incendiary bombs.
The Russian Ministry of Emergency Situations said that at least 143 people were killed as a result of the terrorist attack.