Palestinian policemen opened fire at undercover Israel Defense Forces soldiers during an operation in Bethlehem yesterday. No soldiers were hurt during the incident, and the IDF said its inquiry revealed that no policemen were hurt. However, the Palestinians said one policeman was wounded. According to the army's initial inquiry, the Palestinian police had not been informed about the army operation. Thus, when the soldiers, who were disguised to look like Arabs, came to arrest a wanted man not far from City Hall, the policemen took them for members of an armed Palestinian gang.