Abid Hamid Mahmud al-Tikriti, who was Saddam Hussein's personal secretary and a key advisor, was executed by the Iraqi government primarily because of his involvement in regime crimes during Saddam's rule. As a part of Saddam's inner circle, Abid Hamid was heavily involved in various decisions and actions that led to widespread repression, human rights abuses, and atrocities against the Iraqi people.

His execution on June 7, 2012, came after he was found guilty by an Iraqi court, which held him accountable for his part in the oppressive regime. Abid Hamid was number four on the U.S. list of the 55 most-wanted Iraqis following the 2003 invasion of Iraq, indicating his significant involvement within the regime and the importance of his capture and subsequent trial.

The information can be referenced from an official announcement by the Iraqi government or from credible news sources reporting on his execution.