Security and medical officials say that several attacks in northern Iraq and Baghdad have killed at least 33 people.
In the ethnically mixed northern city of Kirkuk, two car-bomb attacks in the same neighborhood killed at least 19 people and wounded 190.
The first blast was detonated by a suicide attacker near the offices of the Kurdistan Democratic Party of regional leader Massud Barzani. A second car bomb was detonated nearby, killing another two people.
A suicide car bombing in the town of Tuz Khurmatu, some 75 kilometers from Kirkuk, killed five people and wounded 40, while three separate attacks in Baghdad left seven people dead.
Oil-rich Kirkuk, some 300 kilometers north of Baghdad, is home to a mix of Arabs, Kurds, and Turkomans.
The Kurds want to incorporate it into their self-ruled region in Iraq's north. Arabs and Turkomans are opposed.
No group immediately claimed responsibility for the attacks, but car bombs are most often used by Sunni insurgents.
Based on reporting by AFP, Reuters, and dpa