At least 10 Iraqi policemen have been killed in car bomb attacks on police stations in central Iraq, local officials and medics say.
Ramadi is one of the main hotspots for US forces
They say at least six Iraqis died in a blast near a police station in Ramadi, in Iraq's violence-torn Sunni Triangle.
Four Iraqi national guards were killed in a separate attack on a checkpoint in the nearby town of Baghdadi.
In Baghdad, two US soldiers were killed and three hurt in a roadside bomb blast, the US military said.
The Ramadi blast happened when officers were queuing up to receive their salaries at the police station, officials and doctors said.
They said at least nine other people were injured in the attack.
In Baghdadi, four Iraqi national guards were killed when a car bomb exploded near a checkpoint, local police chief Mojtaba al-Hiti was quoted as saying by the AFP news agency.
He said that three other guards were injured in the attack.
Insurgents in Iraq have often attacked police and security forces to oppose post-war US plans for the country.
North and central Iraq have been hit by a wave of insurgent attacks in the wake of the US-led assault on the city of Falluja.
The US military commander in northern Iraq has told the BBC that violence in the city of Mosul was undermining efforts to hold elections on 30 January.
At least 57 Iraqi security troops have been killed in Mosul in recent days, and a string of police stations has been bombed.
Brig Gen Carter Hamm said that elections could not be held in all parts of Mosul under present conditions.
In Falluja, the Iraqi Red Crescent has established its first relief centre three weeks after US forces launched an attack to wrest the city from insurgent control.
The city remains under siege with doctors and nurses unable to move around freely to treat the wounded, an International Red Cross spokeswoman said.