Iraqi insurgents reportedly occupied a government building in a town north of Baghdad before being driven out by US troops and Iraqi security forces.
Officials in the town of Khalis, 60km (40 miles) north of the capital, said gunmen attacked two police stations and occupied the city hall at dawn.
They say they were forced out after a two-hour exchange of fire.
One Iraqi policeman was injured and several rebels were reportedly killed in the attack.
A police officer said that about 100 rebels took part in
the attack, and that they had left behind several mortars
and rocket-propelled grenades.
US soldier killed
In another incident north of Baghdad, a US soldier was killed when a roadside bomb exploded next to his vehicle.
The attack happened in the town of Duluiya, 90km (58 miles) north of the capital.
It came as US, British and Iraqi government forces
continued their operation against suspected insurgent
strongholds around the cities of Latifiya and Mahmudiya, south of Baghdad, reportedly arresting dozens of men
suspected of launching attacks in the area.
The raids were part of Operation Plymouth Rock,
which was launched on Tuesday against insurgents operating between the
capital and Shia shrine cities of Karbala and Najaf.
It aims to close off escape routes
for insurgents trying to escape from Falluja, which US
and Iraqi forces reoccupied earlier this month
after a week of fierce fighting.