Last Updated: Tuesday, 20 February 2007, 11:05 GMT
Fresh violence rocks Iraq capitalHospitalised Iraqis overcome by fumes after tanker explosion in Taji
The tanker blast caused dozens of injuries from inhaling fumes
The US military in Iraq says another five American soldiers have been killed by insurgents in the past day.
Three US troops died in a roadside bomb in south-west Baghdad and two more in a suicide car bombing targeting a newly set up combat outpost north of Baghdad.
Separately, two people were killed and dozens hurt when a chemicals tanker was blown up in Taji, north of Baghdad.
And two car bombs killed at least eight other people and wounded 30 in south-west and south Baghdad.
Correspondents say the attacks come as militants are showing increasing defiance to a major security operation launched by US forces and their Iraqi government allies.
The outpost in Tarmiya, set up under the new security plan, was badly damaged when it was hit be an explosives-laden vehicle.
The head-on attack was described as unusual for both the tactics and the target.
Insurgents mainly stay away from direct assaults on well-armed US military compounds.US forces have set up cordons throughout Tarmiya, about 50km (30 miles) north of Baghdad, and launched searches for insurgent hideouts.Iraqi Defence Ministry officials said the head-on attack bore the hallmarks of an operation by al-Qaeda in Iraq
In all, 19 troops were also injured in the two attacks on US forces on Monday.Poisonous fumesHours after the tanker blast in Taji, Iraqi officials revised the death toll down from six to two, adding that 148 people had to be treated for gas poisoning.
The injured included many children who were overcome by the chlorine fumes.http://news.bbc.co.uk/2/hi/middle_east/6377829.stm