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The Caretaker government system of Bangladesh was introduced in 1991 through the passage of the 13th amendment to the constitution. The system was formed to hold democratic elections after military dictator, Hussain Muhammad Ershad, was removed from power. The amendment recommended making the last retired chief justice the chief adviser. In 1996 Justice Muhammad Habibur Rahman was appointed the Chief Adviser of the caretaker government. He along with the President of Bangladesh, Abdur Rahman Biswas, prevented the 1996 Bangladesh coup d'état attempt. The Bangladesh Nationalist Party had some difficult appointing a Chief adviser to the caretaker government which lead to the 2006–08 Bangladeshi political crisis. The Bangladesh Nationalist Party appointed President Iajuddin Ahmed the Chief Adviser to the Caretaker government but he faced demands for resignation from Bangladesh Awami League. Iajuddin Ahmed was replaced by Fakhruddin Ahmed. During the crises the military-backed caretaker government was led by Chief Adviser Fakhruddin Ahmed. Fakhruddin Ahmed appointed three special assistants to himself who were given the rank of a state minister. The assistants were Barrister Debashis Roy, Brigadier General M. A. Malek, and Professor M Tamim. There was some debate about the constitutional validity of the assistant to the Chief Advisers.