Khan led a judicial commission in 1998 that looked at the Shamim Reza Rubel murder in police custody.[3]
Khan was chairman of Bangladesh Press Council in 2006[4] and founder of Manikganj Zilla Samity.[2] He was a former president of the Dhaka Bar Association.[2]
In August 2007, clashes broke out between students of the University of Dhaka and Bangladesh Army soldiers stationed on campus and car of Directorate General of Forces Intelligence was burned.[5][6] In the following days protests spread to different districts in which one person was killed and 300 were injured.[5] Khan led a one man commission formed by the government to investigate the incident.[5][7] His investigation found no fault with the actions of the university teachers.[8] Bangladesh Police had detained Dr. Sadrul Amin, President of Dhaka University Teachers' Association and General Secretary of Dhaka University Teachers' Association M. Anwar Hossain.[9] The police also detained Professor Harun-or-Rashid and Professor Dr. Neem Chandra Bhowmik of the University of Dhaka along with 15 students.[6] His final report recommended that the government create a code of conduct for University of Dhaka students, teachers, and staff.[10]
On 30 July 2008, Khan was made the first chairman of the Truth and Accountability Commission.[11] The commission formed by the Fakhruddin Ahmed led Caretaker Government to investigate corruption.[12] The Commission would be declared illegal by the High Court Division.[13][14]
In 2010, Khan was made the leader of a single man commission to investigate government land which have been illegally occupied.[15] He reported the task to be impossible due to the size of the task and the lack of manpower.[15]