Iraqi police say a suicide bomber has killed five people and wounded at least 15 in the southern city of Basra, a burgeoning oil-industry hub.
Authorities said the bomber tried to drive onto the grounds of a police compound. When his car was blocked, the bomber blew up the car.
At least three of the dead were reported to be policemen.
On Saturday, two apparently coordinated car bombings killed six people in the northern Iraqi city of Mosul.
Police and medical officials said the blasts took place on a busy street near government buildings. They say the explosions wounded at least 55 people.
Also, government officials said gunmen stormed the home of a school teacher in a village near Tikrit - a city about 130 kilometers north of Baghdad - killing the teacher and four family members, including three children.
There were no immediate claims of responsibility for either incident.
Violence in Iraq is down sharply from its peak in 2006 and 2007. However, a new spate of attacks has raised concerns about a possible increase in violence as the U.S. prepares to withdraw its forces at the end of the year.
Some information for this report was provided by AP, AFP and Reuters.
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