The Beslan school siege (also referred to as the Beslan school hostage crisis or Beslan massacre) started on 1 September 2004, lasted three days, involved the illegal imprisonment of over 1,100 people as hostages (including 777 children), and ended with the deaths of at least 334 people. The crisis began when a group of armed Islamic militants, mostly Ingush and Chechen, occupied School Number One (SNO) in the town of Beslan, North Ossetia (an autonomous republic in the North Caucasus region of the Russian Federation) on 1 September 2004.