An explosion killed two Britons when it destroyed their bullet-proof vehicle near an entrance to coalition headquarters in Baghdad today.
At least two others were injured, one of whom is thought to be in a serious condition.
Security sources in the Iraqi capital said the car belonged to a private security company and was hit by a rocket-propelled grenade.
American soldiers tried to pull the men from the shattered car, and quickly sealed off the area, according to a witness. The blast happened about 50 yards from the "Assassins Gate" one of the main entrances to the Green Zone, a specially guarded zone where occupation forces live and work.
About an hour later, at least two explosions were heard in central Baghdad, and smoke rose from the vicinity of the Green Zone.
The bomb attack was the latest in a series of deadly assaults in the Iraqi capital.
AP