A series of suicide car bombings and roadside blasts in Baghdad has killed about 15 people, including members of the police and security services.
Schoolgirl Marwa Faris lost her father in one attack
In the worst attack a car bomb exploded at a petrol station used by Iraqi police, killing at least five people.
About 15 people were wounded in the blast, which also damaged 20 police and civilian cars waiting to refuel.
The attacks came hours before the US was due to hand formal control of the Iraqi army to Iraq's prime minister.
A US military spokesman called it one of the most significant steps in handing power back to Iraqis since the formation of the first democratically elected government in the post-Saddam era.
Spate of attacks
In one of the attacks, insurgents killed three civilians and wounded 20 more in a roadside bombing near the Sunni al-Nida mosque, in a largely Shia area of north-east Baghdad, security officials said.
The bomb exploded as a police patrol was passing the area, officials said, and several security force members were injured.
In the western Mansour district, a roadside bomb killed a man as he was driving his daughter to school for an exam. Fifteen-year-old Marwa Faris and a passer-by were also injured.
A suicide car bomb also exploded near a road tunnel in the centre of Baghdad, killing two civilians and two police special forces officers, and wounding 13 people.
A roadside bomb also targeted a police patrol in the central Karrada district, killing a civilian and wounding two others.
Meanwhile, Iraqi TV reported that a nephew of Iraqi parliament speaker Mahmoud al-Mashhadani had been kidnapped. Gunmen snatched Ahmed al-Mashhadani on Wednesday night in northern Baghdad, al-Sharqiya TV reported.