BBC: A key Sunni ally of the US and Iraqi governments has been killed in a bomb attack in the city of Ramadi, Iraqi police and media say.
Abdul Sattar Abu Risha was the leader of an alliance of Sunni Arab tribes that rejected al-Qaeda because of its methods and worked with the US.
He was killed in a bomb attack near his home in Iraq's western Anbar province.
Abu Risha was among a group of tribal leaders who met President George W Bush during his visit to Iraq last week.
"The sheikh's car was totally destroyed by the explosion. Abu Risha was killed and two of his bodyguards were seriously wounded," Ramadi police officer Ahmed Mahmoud al-Alwani told Reuters.
Later it was reported that both bodyguards had died. Iraqi insurgents kill key US ally (more)
Mark Alexander
