Bangladesh Liberation war started with the launch of Operation Searchlight by Pakistan Army on 25 March 1971. After Pakistan Army attacked Chittagong University Singha hid and helped a number of faculty to escape to India. After Pakistan Army regained control of Chittagong, they and the paramilitary razakar attacked his residence on 13 April 1971 and killed him. On 2013 Bangladesh Nationalist Party politician and former member of Razzakars Salahuddin Quader Chowdhury was sentenced to death by the International Crimes Tribunal for his role in the death of Singha. Salauddin Quader Chowdhury was executed in 2016.