2003 Quetta mosque bombing was first of its kind terrorist, sectarian attack as for the first time a suicide bomber was used and one of the deadliest attacks on Hazara people, the Shia minority in southwestern city of Quetta, in Balochistan province of Pakistan. On Friday July 4, 2003 when hundreds of worshipers were offering Friday prayer, three armed men enter the Asna Ashari Hazara Imambargah and started shooting, threw hand grenades and one suicide bomber blew himself which left more than 50 dead and tens of others injured. It was second major sectarian attack on Hazara community in Quetta after the massacre of Police cadets. It was the start of the Series of Hazara Killings in Quetta.