[4] Rahman has served in the United Nations Mission in Bosnia and Herzegovina.
[6] From 2001 to 2002, Rahman served in the United Nations Transitional Administration in East Timor.
[7] In November 2006, Rahman was appointed commissioner of the Dhaka Metropolitan Police.
[11] In January 2007, he led raid of the Dhaka Metropolitan Police in detaining more than a thousand supporters of the Awami League ahead of a program of the party.
[12] Three thousand people were detained in mass arrests after Rahman provided each police station under the Dhaka Metropolitan Police with a target number of detainees.