Two Americans working for the U.S.-led coalition were shot dead along with their Iraqi translator after their car was stopped at a makeshift checkpoint by men dressed as Iraqi policemen, a Polish military spokesman said Wednesday. The shooting happened outside Hillah in south-central Iraq on Tuesday night, Col. Robert Strzelecki said by telephone from the Camp Babylon headquarters of the Polish-led multinational force in Iraq. Polish troops arrested five Iraqis and found the victims' bodies in the car, he said. **PHOTO CAPTION*** Shiite Muslims throw stones towards an approaching US Army tank outside Baghdad's palace in this Oct 8, 2003 file photo. (AP Photo/FILE/Anja Niedringhaus, File)