Chowdhury's candidacy in the 2008 election was cancelled by the returning officer of Bangladesh Election Commission as a court order that cleared him a loan defaulting case did not reach the commissions office before the deadline.[2]
In November 2009, Chowdhury's residence was attacked allegedly by Awami League activists.[3]
On 20 May 2010, Chowdhury collected nominations papers to contest the Chittagong City Corporation mayoral elections.[4] In September 2010, an arrest warrant was issued against him and his brother, Saifuddin Quader Chowdhury, on a bad check case.[5]
Two of Chowdhury's followers were lynched by a mob when they were fleeing after shooting a local Jubo League leader on 24 October 2013.[6]
Chowdhury is a vice chairman of the Bangladesh Nationalist Party as of August 2016.[7][8] He is the former president of the Chittagong District (north) unit of Bangladesh Nationalist Party.[9] He is a director of QC Container Line Ltd and QC Shipping Ltd, both of which are family-owned companies.[10] He is also a director of Dacca Dyeing.[11]
On 3 June 2018, Chowdhury secured bail in two cases, one over threatening Prime Minister Sheikh Hasina and another over vandalizing cars, from the High Court Division.[12]
On 30 October 2019, Chowdhury was sentenced to three years imprisonment for making derogatory comments about Prime Minister Sheikh Hasina.[13] He went on the run after securing a bail from the High Court Division.[13]
