At least three US soldiers were killed in an attack on a convoy in the town of Khaldiyah, west of capital Baghdad, according to witnesses reports. They claimed that a truck transporting troops was blown up by an explosive device or landmine on a road, and soldiers were fired on as they tried to evacuate casualties, Iraqi sources said. US military officials said two soldiers were wounded when their convoy was attacked near the town of Ramadi, but they have not commented on the reported attack in Khaldiyah. The town is part the so-called Sunni Triangle where support for ousted Iraqi leader Saddam Hussein is strongest and has been the scene of frequent clashes involving US troops.