Two top aides to Saddam Hussein were hanged before dawn Monday, and the head of one of them -- the former Iraqi dictator's half brother Barzan Ibrahim -- was severed from his body during the execution, a government official said.

Two weeks and two days after Saddam was executed in an unruly scene that has drawn worldwide criticism, government spokesman Ali al-Dabbagh stressed that all laws and rules were respected during Monday's hanging of Ibrahim, the former intelligence chief, and Awad Hamed al-Bandar, head of Iraq's Revolutionary Court.