Alamgir rose through the ranks of EPSU and, at the height of the 1969 uprising against the Ayub Khan administration, he was elected as the organization's Dhaka University president.

[8] Alamgir joined Bangladesh Nationalist Party amid the countrywide uprising to topple the military regime of Gen. Hussain Muhammad Ershad in the early 1990s.

[8] Alamgir ran in the 5th parliamentary election in 1991 from Thakurgaon-1 constituency on the Bangladesh Nationalist Party ticket but lost to Awami League candidate Khademul Islam.

A cabinet reshuffle later named him Minister of State in charge of the Ministry of Civil Aviation and Tourism, where he served until the BNP government left office in October 2006.

[13] Alamgir became well known in Bangladesh for his frequent appearance in the media as the BNP's spokesperson, particularly as leader of the opposition to the Awami League-led government that took office in January 2009.

[23] He claimed the violence was intended to permanently damage the national security of Bangladesh and accused the Awami League government of not properly investigating the incident.

[27] Which is confirmed by Press Wing Member of BNP Chairperson Shairul Kabir Khan and Additional Deputy Commissioner of DB, Gulshan Division, Hafiz Al Asad to Prothom Alo.

Deputy Commissioner of Media and Public Relations Department of DMP Farooque Hossain told Prothom Alo that he will be shown as arrested.

DMP Commissioner Habibur Rahman told Prothom Alo that he was arrested in the case of murder and car burning in Paltan police station.

[30] The Communist Party of Bangladesh (CPB) has demanded the release of all arrested leaders and activists including Mirza Fakhrul Islam Alamgir.

His uncle was named to head the newly formed Directorate of Youth Camps that oversaw training facilities for freedom fighter recruits in 1971.