( AP ) - Bombs planted along Iraq's roads and in a parked car killed at least four people in separate attacks Sunday, police said.
Explosives hidden in a parked car went off around 11 a.m. near an Iraqi police patrol in Mosul, killing three civilian bystanders and wounding at least 16 people, according to police Brig. Mohammed al-Wagga. Five of those wounded were policemen, he said.
The blast caused damage to retail shops in the Dawasa neighborhood, and about 15 cars were burned, al-Wagga said. Mosul lies about 225 miles northwest of Baghdad.
Farther south in Tikrit, a bomb exploded inside a police station, killing one policeman and wounding two others, according to police and doctors at a nearby hospital.
The officers had discovered the bomb on a downtown street and thought they had defused it, police said. Afterward, they brought the bomb to a station for further examination, and it exploded.
Tikrit is a mostly Sunni Muslim town 80 miles north of Baghdad.
Meanwhile in the Iraqi capital, a roadside bomb exploded near a gas station as people were lining up to buy fuel at the start of the work week. Three civilians were wounded, police said.
About half an hour earlier, another roadside bomb struck an American military patrol in a northeastern section of the Iraqi capital, police said. The U.S. military confirmed the attack, saying an American vehicle was damaged and that there were no reports of casualties.
The military also said mortars or rockets were fired early Sunday at a U.S. outpost in Baghdad's Azamiyah neighborhood, and that no fatalities were reported.
Iraqi police also said U.S. helicopter gunships bombed a truck in eastern Baghdad's Obaidi neighborhood around 8 a.m. The truck had apparently been carrying a rocket launcher, they said.
The U.S. military could not confirm the strike.