A female suicide bomber has killed 15 people and wounded 35 others in a blast outside a restaurant in Baquba.
The woman walked over to a group of policemen outside a restaurant then detonated explosives under her clothing. Several cars were set on fire.
The attack occurred near a number of government buildings in Baquba, 65 km north of Baghdad. The US military said the dead included seven policemen.
21 female suicide bombers have carried out attacks this year. Most have been in Diyala and Baghdad.
Security officials have blamed those bombings on al-Qaeda, which they say has sought to recruit women because they can sometimes escape strict security checks on men.
Violence in Iraq has dropped to a four-year low, but this bombing was the second big attack in the past week.
