U.S. troops opened fire on a civilian vehicle north of Baghdad Monday, killing at least three Iraqis, including a child, when troops say the vehicle failed to stop as ordered.
But surviving family members say five people, including three children, were killed.
U.S. Major Steve Warren called the deaths a tragedy. Hours later, a car bomb exploded as a U.S. convoy passed in the same area, killing four Iraqis.
Meanwhile, at a reconciliation conference in Cairo, Iraq's President Jalal Talabani said he is willing to hold talks with insurgents and members of the ousted government.
Mr. Talabani then traveled to Tehran for the first visit to Iran by an Iraqi head of state in nearly four decades. He met with Iranian President Mahmoud Ahmadinejad for wide-ranging talks on relations and the fight against terrorism.
Some information for this report provided by AP, AFP and Reuters.