Coordinated bomb attacks killed more than 32 people across Iraq on Sunday.
No one has claimed responsibility for the string of attacks, but a local al Qaeda affiliate and other Sunni Islamist groups have carried out at least one major assault a month since the last American troops left in December.
Violence in Iraq has eased since its height in 2006-2007 when sectarian fighting killed thousands of people, but Sunni Islamists and an al Qaeda affiliate still launch regular attacks, seeking to undermine the Shi'ite-led government.
The most deadly explosion took place in Taji, 20 kilometres north of the capital Baghdad, where bombs in three parked cars went off separately, killing 11 people and wounding 24.
In Baghdad, three separate bombs killed eight people, including a police officer, Reuters reports.
A suicide bomber in a car blew himself up in the city of Kut, 150km southeast of Baghdad, killing four policemen, police and local officials said.
Two more policemen were killed when a car bomb went off in the town of Balad Ruz, 90km northeast of Baghdad.
Another attack targeted a bus carrying Iranian pilgrims as it passed through the town of Madaen, about 30km southeast of Baghdad. Two passers-by were killed.
Further attacks around the country killed a further four people and left scores wounded.
