عبد المؤمن بن علي
Ibn Tumart died shortly after, in August 1130. That the Almohad movement did not immediately collapse after such a devastating defeat and the death of their charismatic Mahdi, is a testament to the careful organization Ibn Tumart had built up at Tinmel. There was probably a struggle for succession, in which Abd al-Mu'min prevailed. Although a Zenata Berber from Tagra (Algeria), and thus an alien among the Masmuda of southern Morocco, Abd al-Mu'min nonetheless saw off his principal rivals and hammered wavering tribes back to the fold. In an ostentatious gesture of defiance, in 1132, if only to remind the emir that the Almohads were not finished, Abd al-Mu'min led an audacious night operation that seized Tasghimout fortress and dismantled it thoroughly, carting off its great gates back to Tinmel.