According to a notification issued by the Ministry of Public Administration, former IGP Mamun's contractual appointment with the government was terminated late last night.

 Earlier, Home Ministry's Deputy Secretary Md Mahbubur Rahman Sheikh on Tuesday issued an order appointing Mainul as IGP as per the president's order. 

Mainul Islam from Panchagargh was serving as the commandant of the Traffic and Driving School (TDS) in Dhaka.He formerly was posted as deputy inspector general of the Police Training Centre in Tangail. Mainul joined the Bangladesh Police on 20 January 1991 through 12th Bangladesh Civil Service.