[8] In January 2009, Khan was appointed additional director general of the Rapid Action Battalion replacing Colonel Gulzar Uddin Ahmed.

[9] He oversaw the detention of two Bangladesh Chhatra League leaders protesting Prime Minister Sheikh Hasina's resignation from the organisation in 2009.

[11][12][13] In December 2010, he was appointed military secretary at Army headquarters after being promoted to major general.

[14] Khan was the commandant of the Bangladesh Institute of Peace Support Operation Training from 8 February 2016 to 11 August 2016.

[16] He visited Bismaya New City Project after Iraqi security officials assaulted Bangladeshi workers due to alleged links with the Sunni insurgency.