Iraq US Troops
Iraqis celebrate in Baghdad, Iraq, Monday, June 29, 2009, to mark the milestone of U.S. troops leaving Iraqi cities, fireworks colored Baghdad's skyl...
Iraqis celebrate in Baghdad, Iraq, Monday, June 29, 2009, to mark the milestone of U.S. troops leaving Iraqi cities, fireworks colored Baghdad's skyline and thousands of people attended a party in a city park late Monday where singers performed patriotic songs. U.S. troops will be out of Iraqi cities by tomorrow Tuesday 30, in the first step toward winding down the American war effort by the end of 2011. (AP Photo/ Khalid Mohammed)
APTOPIX Iraq US Troops
Iraqi security forces celebrate in Ramadi, the capital of Anbar province, 115 kilometers (70 miles) west of Baghdad, Iraq, Monday, June 29, 2009. U.S...
Iraqi security forces celebrate in Ramadi, the capital of Anbar province, 115 kilometers (70 miles) west of Baghdad, Iraq, Monday, June 29, 2009. U.S. troops will be out of Iraqi cities by tomorrow Tuesday June 30, in the first step toward winding down the American war effort by the end of 2011. (AP Photo/ Karim Kadim)
Iraq US Troops
Iraqi security forces celebrate in Ramadi, the capital of Anbar province, 115 kilometers (70 miles) west of Baghdad, Iraq, Monday, June 29, 2009. U.S...
Iraqi security forces celebrate in Ramadi, the capital of Anbar province, 115 kilometers (70 miles) west of Baghdad, Iraq, Monday, June 29, 2009. U.S. troops will be out of Iraqi cities by tomorrow Tuesday June 30 in the first step toward winding down the American war effort by the end of 2011. (AP Photo/ Karim Kadim)
APTOPIX Iraq US Troops
Iraqi National Police patrol in central Baghdad, Iraq, Tuesday, June 30, 2009. U.S. troops pulled out of Iraqi cities on Tuesday in the first step to...
Iraqi National Police patrol in central Baghdad, Iraq, Tuesday, June 30, 2009. U.S. troops pulled out of Iraqi cities on Tuesday in the first step toward winding down the American war effort by the end of 2011. (AP Photo/Hadi Mizban)
APTOPIX Iraq US Troops
Iraqi security forces patrol in central Baghdad, Iraq, Tuesday, June 30, 2009. U.S. troops pulled out of Iraqi cities on Tuesday in the first step t...
Iraqi security forces patrol in central Baghdad, Iraq, Tuesday, June 30, 2009. U.S. troops pulled out of Iraqi cities on Tuesday in the first step toward winding down the American war effort by the end of 2011. (AP Photo/Khalid Mohammed)
APTOPIX Iraq US Troops
Iraqi Army patrol in central Baghdad, Iraq, Tuesday, June 30, 2009. U.S. troops pulled out of Iraqi cities on Tuesday in the first step toward windin...
Iraqi Army patrol in central Baghdad, Iraq, Tuesday, June 30, 2009. U.S. troops pulled out of Iraqi cities on Tuesday in the first step toward winding down the American war effort by the end of 2011. (AP Photo/Khalid Mohammed)
APTOPIX Iraq US Troops
The American military has completed a withdrawal from Iraq's cities, and U.S. Army soldiers from C Co., 1st Battalion, 5th Infantry Regiment are seen...
The American military has completed a withdrawal from Iraq's cities, and U.S. Army soldiers from C Co., 1st Battalion, 5th Infantry Regiment are seen resting in the shade at Forward Operating Base Warhorse in Baqouba, Iraq, Tuesday, June 30, 2009. US troops completed their last patrols on Monday after their deadline to withdraw from Iraqi cities. (AP Photo/ Maya Alleruzzo)
Iraq US Troops
Iraqi security forces patrol in central Baghdad, Iraq, Tuesday, June 30, 2009. U.S. troops pulled out of Iraqi cities on Tuesday in the first step to...
Iraqi security forces patrol in central Baghdad, Iraq, Tuesday, June 30, 2009. U.S. troops pulled out of Iraqi cities on Tuesday in the first step toward winding down the American war effort by the end of 2011. (AP Photo/Khalid Mohammed)
Iraqi police and hospital officials say a car bomb has exploded in the northern city of Kirkuk, killing at least 24 people and wounding dozens.
Police say the car blew up at a market in Kirkuk's Shurja area as people shopped just before sunset.
Tuesday's bombing comes as Iraqis celebrate what the government is calling National Sovereignty Day to mark the withdrawal of U.S. combat troops from Iraqi cities.
The U.S. military also says four U.S. soldiers were killed in combat in Baghdad on Monday.
Police Brig. Gen. Sarhat Qadir and Dr. Sabah Zangana, the director of Kirkuk's Health Directorate, also said at least 40 people were wounded in the attack.
