A car bomb killed 22 Iraqis and four foreigners at one of central Baghdad's busiest intersections today.
At least 30 people were wounded and witnesses said at least three children were among the dead.
A policeman who witnessed the attack on the foreign security convoy of four civilian vehicles a car bomb was responsible for the blast.
Today's blast brought chaos to central Baghdad with the road was strewn with shattered glass and mangled cars.
The bomb targeted one of the distinctive convoys used by foreign civilians in Iraq , which usually travel in conspicuous sports utility vehicles protected by armed security guards. The US military said the convoy was operated by an American company but the nationalities of the dead foreigners were not yet known.
Since Iraq 's political factions unveiled a new cabinet last week after months of squabbling, guerrillas have mounted a wave of deadly attacks, killing more than 300 people, defying government predictions that the insurgency was crumbling.
Many Iraqis say the delay in forming a government after the historic January 30th elections allowed the insurgents to regroup.
After a lull in attacks in March and April, insurgents have struck repeatedly over the past week with deadly blasts. Yesterday, a suicide car bomb at a vegetable market in Suwayra, south of Baghdad, killed 31 people.
A suicide bomber also blew up his vehicle beside a police minibus in Saddam's hometown of Tikrit, killing at least nine policemen. A series of bomb blasts and ambushes in Baghdad on Thursday killed at least 24 people, and on Wednesday a suicide bomb in the northern Kurdish town of Arbil killed as many as 60.
Insurgents are also pressing foreign troops to leave by seizing foreign hostages. On Friday, Al Jazeera aired a new video showing Australian captive Douglas Wood (63), apparently pleading for his life as two guerrillas pointed rifles at him.
Australian Foreign Minister Alexander Downer said Canberra would not bow to the demands of hostage takers and would not withdraw its troops.