[6] He was the additional commissioner (crime and operation) of the Chittagong Metropolitan Police.
[7] Tanvir was the Deputy Commissioner of Dhaka Metropolitan Police Traffic (North) in 2008.
[17] Tanvir proposed extending the jurisdiction of Chittagong Metropolitan Police to Karnaphuli Tunnel, Shah Amanat International Airport, and industrial zones in Anwara Upazila in July 2022.
[18] Tanvir was replaced by Krishna Pada Roy and was appointed director of the Central Police Hospital.
[20] Following the fall of the Sheikh Hasina led Awami League government, Barrister Mohammad Mosharraf Hossain replaced him at the NSI.