Senior Secretary to the public administration ministry Dr Kamal Abdul Naser Chowdhury has been made the principal secretary to the prime minister. The public administration ministry issued a circular in this regard yesterday. Chowdhury replaces Abul Kalam Azad as the PM’s principal secretary. Meanwhile, the government appointed Abul Kalam Azad as the principal coordinator of SDG (sustainable development goal) affairs at the Prime Minister’s Office (PMO) on contractual basis for three years. He is set to retire on December 1 this year.