Police in Iraq say at least 16 people were killed and dozens wounded in a series of bombings across the country Monday.
In the deadliest attack, a suicide bomber killed seven policemen and wounded 10 others when he blew himself up near a police station in western Anbar province.
Earlier, back-to-back bombings in Baghdad left at least three soldiers dead and at least 15 people wounded. The second blast detonated as rescuers and bystanders tried to help victims of the first attack.
Just south of Baghdad, outside Diwaniya, a bomb planted on a bus exploded, killing six people and wounding two others.
Violence in Iraq has fallen significantly during the past two years, although insurgent attacks still remain common.
The attacks have raised questions about the ability of local security forces to keep Iraqis safe as U.S. forces withdraw.
On Sunday, the U.S. military announced a development in the case of the 2006 kidnapping and murder of members of an Iraqi tae kwon do team.
The military said Iraqi commandos have arrested a suspect in the case near Khalidiyah. No further details were available.
The tae kwon do team was driving to Jordan in May 2006 when its convoy was stopped on a highway in Anbar province between Fallujah and Ramadi. More than a year later, the remains of 13 team members were found.
Some information for this report was provided by AP and Reuters.