"Sixteen supporters of Ukraine's youth radical group MKU, involved in violent crimes, extremism propaganda and preparations to stage explosions in administrative buildings belonging to governmental agencies and armed attacks on citizens, were detained in Irkutsk, Krasnodar, Saratov, Tambov, Tyumen, Chita, Krasnodar Region's Anapa and Moscow Region's Puschino," the FSB said in a statement.
Bladed weapons, extremist symbolic, information about committed and planned crimes of terrorist and extremist nature, and video reports on violent actions were seized from the detainees, the security service continued.