Police in Iraq say six people have been killed and 14 wounded in a suicide bomb attack in western Baghdad.
Two of the dead and two of the injured are said to be policemen.
Four US soldiers were killed and six wounded in an attack on a patrol near the northern Iraqi oil refining town of Baiji overnight, according to reports.
Police in the town said two Humvee patrol vehicles and a larger armoured vehicle appeared to have been wrecked and burnt out.
Meanwhile, the American military said damage caused by insurgents in Iraq is soaking up money that had been destined for reconstruction.
The statement was issued by the US Army Corps of Engineers which is responsible for carrying out the equivalent of almost €15bn worth of planned projects.
It said that up to 25% of that aid had gone on security to face down relentless violence and sabotage.
