An armed confrontation between two Iraqi army units left one soldier and one civilian dead, raising questions about the US-trained force's ability to maintain control at a time when sectarian and ethnic tensions are running high.
The incident yesterday near Duluiyah, about 70 kilometres north of Baghdad, illustrates the command and control problems facing the new Iraqi army, which the Americans hope can take over security in most of the country by the end of the year. It also shows that divisions within the military mirror those of Iraqi society at large.
The trouble started when a roadside bomb struck an Iraqi army convoy, which police said was made up of Kurdish soldiers. Four soldiers were killed and three were wounded, police said. US military officials put the casualty figure at one dead and 12 wounded.
According to both the US and Iraqi accounts, the wounded were rushed to the US military hospital in Balad. Police said that as the Kurdish soldiers drove to the hospital, they fired weapons to clear the way, and one Iraqi Shia civilian was killed.
Shia soldiers from another Iraqi unit based in Balad rushed to the scene, and the Kurds decided to take their wounded elsewhere, Iraqi police said. Iraqi troops tried to stop them and shots were fired, killing one Shiite soldier, Iraqi police said.
The US account said an Iraqi soldier from the 3rd Battalion, 1st Brigade was killed in a "confrontation" as the other Iraqi troops were trying to remove their wounded from the hospital. The US statement did not explain why the troops wanted to take their wounded from the best-equipped American medical facility in the country.
A third Iraqi army unit set up a roadblock in the area and stopped the soldiers who were leaving with their wounded, the US statement said. American troops intervened at the roadblock and calmed the situation. The US said the Iraqi army was investigating the incident.
US President George W Bush
Thousands of Kurdish peshmerga militiamen were integrated into the Iraqi army and provide security in areas with large Kurdish populations, some of which are located near Shia and Sunni Arab communities.
Shias, who comprise an estimated two-thirds of Iraq's 27 million people, dominate the ranks of the army. Efforts are under way to recruit more Sunni Arabs, especially for duty in Sunni areas of western Iraq.
Sunni community leaders complain that the presence of Shia soldiers fuels resentment of the government, which is trying to lure Sunni Arabs away from the insurgency.
The effort to reach out to the Sunnis is taking place against a backdrop of sharp tensions between the two Muslim sects, fuelled by tit-for-tat assassinations, many of them blamed on militias.
In Basra, gunmen killed a Sunni Arab cleric and his son as they left a Friday prayer service - the second assassination in three days of Sunni leaders in the predominantly Shia south.
Yesterday, US President George Bush singled out Iraq's militias as the biggest impediment to restoring stability in Iraq, saying "it's going to be up to the government to step up and take care of militias so that the Iraqi people are confident in the security of their country."