A suicide truck bombing has killed 10 people and badly damaged a bridge linking Baghdad to northern Iraq.
The attack came on a day US forces said they had killed four people in a raid on the Shia district of Sadr City.
Also on Tuesday, the US military announced the deaths of four soldiers in attacks in Baghdad and Mosul.
The bridge over a branch of the Tigris river collapsed on Tuesday when the bomber detonated his explosives-rigged vehicle at a central section, sending three cars plummeting into the water, police said.
Six people were wounded in addition to the fatalities.
The bridge is a key link connecting Baghdad with the town of Taji, around 40km north of Salaheddin province.
Security officials said the blast partially destroyed the concrete structure of the bridge.
"Rescue teams are searching for survivors from the cars which went down after the attack," one official said.
Fighters have regularly targeted Iraqi infrastructure, especially bridges, in an attempt to cut off vital road links between Baghdad and various cities.
Last Mod: 14 Ağustos 2007, 18:01