By 1552, when the campaign against Persia had begun with Rüstem appointed commander-in-chief of the expedition, intrigues against Mustafa began. Rüstem sent one of Suleiman's most trusted men to report that since Suleiman was not at the head of the army, the soldiers thought the time had come to put a younger prince on the throne; at the same time, he spread rumours that Mustafa had proved receptive to the idea. Angered by what he came to believe were Mustafa's plans to claim the throne, the following summer upon return from his campaign in Persia, Suleiman summoned him to his tent in the Ereğli valley. When Mustafa entered his father's tent to meet with him, Suleiman's eunuchs attacked Mustafa, and after a long struggle the mutes killed him using a bow-string.
by 1552 when the campaign against persia had begun with rüstem appointed commander-in-chief of the expedition intrigues against mustafa began rüstem sent one of suleiman's most trusted men to report that since suleiman was not at the head of the army the soldiers thought the time had come to put a younger prince on the throne; at the same time he spread rumours that mustafa had proved receptive to the idea angered by what he came to believe were mustafa's plans to claim the throne the following summer upon return from his campaign in persia suleiman summoned him to his tent in the ereğli valley when mustafa entered his father's tent to meet with him suleiman's eunuchs attacked mustafa and after a long struggle the mutes killed him using a bow-string