One of those arrested on suspicion of terrorism in Crocus City Hall admitted that he arrived from Turkey on March 4.
The video of the interrogation was published by the RIA Novosti agency.
He said that he was offered half a million rubles for killing people. He admitted that the instructors had given him the task of killing all the people in the hall.
The detainee said that he took that step after a conversation with the "preacher's assistant".