On 15 August 1975 , Mujib was assassinated along with his family by a group of military officers . It is believed that the 15 August coup d'état was masterminded by Khondaker Mostaq Ahmad , a disgruntled member of Mujib 's regime who would become president . Mansur went into hiding immediately after the killing . When Khondaker Mostaq Ahmad invited Awami League leaders such as Mansur Ali , Syed Nazrul Islam , A. H. M. Qamaruzzaman and Tajuddin Ahmad to join his government , they refused . They were arrested by the army on 23 August 1975 . Refusing to support Ahmad 's regime , they were murdered while incarcerated in the Dhaka Central Jail on 3 November , which was one of the key points for the 3 November coup , which already ousted Ahmad from power again
assassinated
Assassination of Sheikh Mujibur Rahman
Muhammad Mansur Ali