Ta'if did not remain in Hashemite hands for very long. Tensions between the King of the Hejaz, Husayn ibn Ali, and Abdulaziz al-Saud, the Emir of Nejd and Hasa, soon broke out into violence. Although hostilities subsided in 1919, by September 1924, the then Saudi-sponsored Ikhwan militia, under the leadership of Sultan bin Bajad and Khaled bin Luwai', was ready to attack Ta'if. The city was supposed to have been defended by the king's son, 'Ali, but he fled in panic with his troops. Three hundred of 'Ali's men were slain by the Ikhwan in what became known as the Ta'if massacre. In 1926, Abdulaziz al-Saud was officially recognized as the new King of Hejaz. Ta'if remained a part of the Kingdom of Hejaz until Abdulaziz al-Saud unified his two kingdoms and consolidated them into the Kingdom of Saudi Arabia in 1932. In 1934 the treaty was signed here that established the boundary lines between Yemen and the kingdom. The king himself was later to die in the city on 9 November 1953, as did King Khalid on 13 June 1982.