In 1955 Al-Thulaya, now a colonel, took advantage of a mutiny in the Taiz region to march against Imam Ahmad, whose popularity among the army had dimmed. The colonel worked to coordinate with Prince Abdullah bin Yahya, a brother of the Imam, seeking to put him on the throne instead.
After his palace in Taiz was surrounded, Imam Ahmad announced that he would abdicate in favor of his brother Abdullah. However, the Imam secretly bought off some of the rebellious soldiers, and later opened fire on the rebel positions, killing 23 rebels and causing their defeat.[3]
Al-Thulaya attempted to flee to Aden, which was under British control, but was captured by tribesmen loyal to the Imam and returned to Taiz, where he was publicly executed along with some of his fellow coup plotters.[1] The Imam reportedly asked the crowd whether he should be executed, and the crowd gave its assent. Al-Thulaya is said to have responded to the crowd: "I wanted life for you, but you wanted death for me."[4]