After the
assassination of Ziaur Rahman on
30 May, 1981 Ershad remained loyal to the government and ordered the army to suppress the coup attempt of Zia's killers, led by Major General
Abul Monjur. He maintained loyalty to the new president
Abdus Sattar, who led the
Bangladesh Nationalist Party to victory in elections in 1982. However, pressure increased from high-ranking army commanders for the military to take over the reins of state. Ershad toppled President Sattar on
24 March, 1982 and proclaimed himself chief martial law administrator. He took over as president on
11 December, 1983 by replacing
A. F. M. Ahsanuddin Chowdhury.
As president, Ershad included amendments into the
constitution of Bangladesh, which legalised the military coups led by himself. He also amended the constitution to declare
Islam the state religion, abandoning state
secularism. To improve rural administration, Ershad introduced the
upazila and
zila parishad system and held the first democratic elections for these village councils in 1985. In an election held in 1986, Ershad was nominated by the Jatiya party, which had been created by him and his supporters. All other major political parties boycotted the election, but Ershad was declared its winner. The Jatiya Party also won an absolute majority in the
Jatiyo Sangshad.In 1987 Bangladesh’s Land Ministry launched the
Land Reforms Action Program, an initiative to distribute khas – unoccupied state-owned land – to landless families. A novel element of the land reform was the establishment by the Ministry of Land.
A wide umbrella of political parties united against Ershad's rule. Zia's widow
Khaleda Zia now led the BNP, which allied itself with the
Awami League, led by Mujib's daughter
Sheikh Hasina. The
Jamaat-e-Islami Bangladesh and other parties also joined the opposition ranks. The strikes and protests called by the opposition groups paralysed the state and its economy. Under pressure, Ershad dissolved the parliament on
7 December, 1987 but the fresh elections were again boycotted by the opposition. An intensifying opposition campaign forced Ershad to step down on
6 December, 1990.