The coup leaders installed Vice-President Khondaker Mostaq Ahmad as Sheikh Mujib 's immediate successor . A staunch conservative , Ahmad promulgated martial law and jailed many prominent confidantes of Sheikh Mujib , including Bangladesh 's first Prime Minister Tajuddin Ahmad . The jailed leaders were executed on 3 November 1975 . Ahmad reshuffled the leadership of the Bangladesh Armed Forces , paving the way for the country 's future military dictatorship
jailed leaders were executed
Jail Killing Day
History of Bangladesh