[6] Hossain served as the high commissioner of Bangladesh to Canada from April 2001 replacing M. Aminul Islam.
[8] On 28 August 2013, he met Ayaz Sadiq, speaker of the National Assembly of Pakistan, and discussed ways of strengthening the relationship between the two countries.
[11] He was briefly recalled on 31 December 2015 to Dhaka over his absence for the High Commission during difficult times in Bangladesh-Pakistan relations.
[10] The Detective Branch briefly detained Abrar Ahmed Khan, the assistant private secretary in the press wing of the Pakistan High Commission in Bangladesh, on 2 February 2016, allegedly to determine why he was carrying a large amount of Indian currency.
[17] Hossain served as the high commissioner of Bangladesh to Pakistan till 3 April 2016 when he was replaced by Tarik Ahsan.