Separately, gunmen wounded 11 officers on another patrol.

The police said Mr. Strozzi also wounded two officers, neither of them seriously.

The workers fired slingshots, wounding 12 officers, the police said.

The police chief in Latifiya, just south of Baghdad, was shot to death by attackers who fired on his car, wounding two other officers.

He was not injured, while wounding six officers, which he said was in self-defense.

A gunman took two women hostage in a crowded store on Saturday and wounded two officers before he was killed by the police.

Later in the morning, a roadside bomb exploded near a passing Iraqi Army patrol, wounding eight officers.

It was apparently aimed at a convoy of a Baghdad district police chief, wounding five officers.

In southern Baghdad, a car bomb detonated near a passing police patrol, wounding three officers and a civilian, the officials said.

June 20: A suicide car bomber killed five policemen and wounded 13 other officers in Ramadi.