[7][8][9][10][11] Khan is the son of Abdul Momen Khan, formerly the top civil servant in Bangladesh (cabinet secretary) and a former Bangladesh Nationalist Party (BNP) politician, a founder member of BNP and the minister of food in the cabinet of President Ziaur Rahman.

[14] Khan was a professor of physics in the University of Dhaka until 1991 when he first successfully ran for the fifth parliament in 1991 and was elected the MP for Narsingdi-2 constituency.

[19] In December 2009, Khan became a member of BNP's standing committee, the highest policy planning body of the party.

[21] The local administration declared Section 144 and attacked the Bangladesh Nationalist Party men at the venue to disperse them.

[21] Khan met with diplomats from 15 foreign countries in December 2015 at the political office of former Prime Minister Khaleda Zia in Gulshan.

[25] After the 2024 Bangladeshi general election, Khan predicted the Sheikh Hasina led government would be forced to resign.