PROBING THE LIMITS OF DESPICABILITY.

At least one American soldier was killed and two others were wounded Thursday in a rocket-propelled grenade attack on a U.S. military ambulance in southwest Baghdad, the U.S. military said.

The ambulance was transporting a wounded U.S. soldier to a medical facility when it was hit at about noon while on a highway in al-Iskandariyah, about 20 miles south of Baghdad.

The wounded soldier who was being transported in the ambulance was not the one who was killed, said Capt. John Morgan, a U.S. military spokesman in Baghdad. The casualties were members of the Army's 804th Medical Brigade and their identities were being withheld pending notification of relatives.

The wounded were taken to an Army support hospital in southwest Baghdad. It was not immediately clear if the ambulance was traveling as part of a convoy or if fire was returned.

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