Hassan Mohammed Amin was an Iraq

Iraq

Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

i general under Saddam Hussein

Saddam Hussein

Saddam Hussein Abd al-Majid al-Tikriti was the fifth President of Iraq, serving in this capacity from 16 July 1979 until 9 April 2003...

's government. He said in 2002 that Iraq would submit a list of chemical, biological and nuclear programs to UNMOVIC, but that the report would not disclose any banned weapons, "because, really, we have no weapons of mass destruction." He participated as an Iraqi member delegation in the discussions conducted between Iraq and the United Nations and the IAEA for the period 1991-2003. He was number 49 on the US list of 55 most wanted Iraqis

U.S. list of most-wanted Iraqis

In April 2003, the United States drew up a list of most-wanted Iraqis, consisting of the 55 members of the deposed Iraqi regime whom they most wanted to capture. The list was turned into a set of playing cards for distribution to United States troops...

 during the 2003 invasion of Iraq

2003 invasion of Iraq

The 2003 invasion of Iraq , was the start of the conflict known as the Iraq War, or Operation Iraqi Freedom, in which a combined force of troops from the United States, the United Kingdom, Australia and Poland invaded Iraq and toppled the regime of Saddam Hussein in 21 days of major combat operations...

. He was the 13th on the list taken into custody on or around 26 April 2003. He was released from the USA custody on 23 December 2005 after it was clear that Iraq had no weapons of mass destruction.

He worked as officer engineer in the army and military industrialization corporation in Iraq and was considered to be one of the scientists who developed missile systems.