Gunmen in Iraq have killed two German engineers and two Iraqis south of Baghdad, and a translator for the U.S. military was killed in a separate shooting in Mosul.

Iraqi and U.S. military officials say the two Germans were engineers working on a water development project. Gunmen shot them Tuesday as they traveled in a car with two Iraqis more than 70 kilometers south of Baghdad.

In the northern town of Mosul, Iraqi police say an Iraqi woman who worked as a translator for the U.S. military was shot dead on Tuesday as she drove to the main American military base in the city.

The shootings come one day after gunmen in Mosul attacked a vehicle carrying American civilians working with a Christian relief organization. Three of the Baptist missionaries were killed immediately in the drive-by shooting and two were wounded. U.S. military officials say one of the wounded died overnight.

In another development, the top U.S. military commander in Iraq says coalition forces will not suffer significant problems if the incoming Spanish government proceeds with plans to withdraw Spain's 1,300 troops from Iraq.

Lieutenant General Ricardo Sanchez told reporters today in Tikrit that the 150,000 strong coalition will be able to readjust quickly to make up for the loss of the Spanish troops operating south of Baghdad.

Some information for this report provided by AP, Reuters and AFP.