Three detainees, one on the wanted list
In preparation of the attack, Chechen students are suspected of an investigation into a group of Chechens, who, according to the FSB, were going to commit terrorist attacks in Moscow on May 9. According to the investigation, four young people - Umar Batukaev, Ruslan Musaev, Adam Osmaev and Lors Khamiev - prepared explosions. The first two were detained a few hours after the discovery on the trade union street on May 8, the Seventh Model, filled with explosives of the Zhiguli machine.