The Sumgait pogrom was perpetrated by ethnic Azerbaijanis against the Armenian population of the town of Sumgait, in the Azerbaijan Soviet Socialist Republic, in February 1988. The pogrom took place during the early stages of the Karabakh movement. On February 27, 1988, mobs of Azerbaijanis formed into groups and attacked and killed Armenians on the streets and in their apartments; widespread looting occurred, and a general lack of concern from police officers allowed the violence to continue for three days.