Earlier, U.S. troops clashed with insurgents in Al-Ramadi, 110 kilometers west of Baghdad. News reports say four people were killed.
Also today, a prominent Shi'ite tribal leader, Sheikh Saad Jaber Yassin, was assassinated in the city of Al Kut, 170 kilometers south-east of Baghdad.
The assassination of the leader of the Bani Lam tribe was carried out by unidentified assailants who planted a bomb beneath the front seat of his car.
(compiled from agency reports)