Iraqi officials say a suicide bomber has killed at least 26 people and wounded more than 20 others north of Baghdad.
Authorities say the bombing took place on Sunday in a crowded cafe in the town of Tuz Khurmatu about 200 kilometers north of the capital.
Meanwhile, attackers abducted senior Oil Ministry official Adel Kazzaz ,the head of Iraq's North Oil Company as he left a ministry meeting in eastern Baghdad. It is the second high profile kidnapping in as many days.
On Saturday, gunmen in Baghdad kidnapped the head of Iraq's Olympic Committee and 29 other sports officials. Six of the officials were freed on Sunday. There is no word on the other hostages.
In the south, British officials say a British soldier was killed in a gunbattle with terrorist suspects in Basra. Two other British soldiers were wounded in a separate roadside bomb attack.
In other violence on Sunday, insurgents raided the detention wing of a hospital northeast of Baghdad and freed several wounded people. Four security men were killed in the attack.
In Kirkuk in the north, U.S. and Iraqi forces killed one gunman and captured two after the gunmen ambushed and wounded an Iraqi security officer.