NEAR RACAK, Serbia (Reuters) - Serbian police had withdrawn their weapons on Wednesday from positions around the site of an alleged massacre in Kosovo, although troops could still be seen moving around in woods above the village. An anti-aircraft gun which had been placed on Monday on a hill above Racak, about 26 km south of the Kosovo capital Pristina, had disappeared. "We haven‘t heard anything as of this morning," said one of a group of international monitors standing on the hill. "It was quiet last night. Quiet so far this morning," said Sandy Blyth, spokesman for international monitors in Kosovo. Signs warning of mines had been placed beside a track leading to the hill. Troops on foot were in nearby woods. The monitors‘ future in the province has been thrown into doubt by an order from Belgrade to expel the head of their mission, William Walker, for accusing Serb security forces of massacring 45 ethnic Albanian villagers in Racak last Friday. The Yugoslav government initially ordered Walker to leave the country by Wednesday afternoon, but on Tuesday unexpectedly gave him an extra 24 hours. He is currently in Belgrade. On Tuesday NATO generals flew to Belgrade to try to persuade President Slobodan Milosevic to stop his latest offensive, which the monitors said on Monday had widened to three other villages around Racak. Diplomats said the talks had made no headway. Western officials found it hard to explain the apparent reprieve for Walker. "I simply don‘t know, except that it keeps the eye on Walker rather than autopsies and stuff like that," one said. A Yugoslav forensic team began work on Tuesday on the bodies of the dead, retrieved from Racak after security forces had pounded what they believed were ethnic Albanian rebel positions around the village for two days. The head of the forensic team told Reuters there were no signs any of the victims had been executed. The Organisation for Security and Cooperation in Europe (OSCE), whose monitors were allowed to witness the autopsies, said examinations had so far been performed on three out of 40 bodies. It had no comment on the Yugoslav official‘s assessment. The Serb-run Media Centre in Kosovo said a policeman reported killed on Tuesday was the deputy chief of police for the town of Urosevac, near the scene of the fighting, adding that he had been killed trying to protect investigators probing the alleged massacre. There was no independent confirmation.