During the reign of late Umayyad Caliph Hisham ibn Abd al-Malik this unrest led to a revolt in Kufa in southern Iraq, mainly by the town's slaves. Shi'ites revolted in 736 and held the city until 740, led by Zayd ibn Ali, a grandson of Husayn and another member of the Banu Hashim. Zayd's rebellion was put down by Umayyad armies in 740. The revolt in Kufa indicated both the strength of the Umayyads and the growing unrest in the Muslim world.