On 4 July 2003, 53 Hazara Shias were killed and at least 65 others were injured when a mosque was attacked during the Friday prayer in Quetta, Balochistan, Pakistan.

[1][2] When hundreds of worshipers were offering Friday prayer, three armed men entered the Asna Ashari Hazara Imambargah and started shooting and throwing hand grenades and one suicide bomber blew himself up - which left 53 dead and scores injured.

[3] On 4 July 2003, hundreds of worshippers were practicing Friday prayer in Asna Ashri Hazara Imambargah Kalan mosque.

Five men armed with automatic weapons[4] entered the mosque and fired on worshippers for ten continuous minutes and tried to throw a grenade, but it exploded in his hand.

[5] Lashkar-e-Jhangvi (LeJ), a banned terrorist group, was responsible for the attack on the mosque.