KACANIK AREA, Serbia (Reuters) - At least 350 ethnic Albanians driven from their homes by recent fighting in the Kacanik area of southern Kosovo were sheltering in a forest gully at the snowline on Monday. International ceasefire monitors were trying to evacuate two three-week old infants who were believed to be suffering from exposure. Another ethnic Albanian woman was in the final stages of labour and was expected to deliver a baby at any moment. Members of the group said other villagers were scattered in small groups across the hills southwest of Kacanik, unable to cross the border into Macedonia because of objections by Serbian officials and too afraid to return to their homes. Western officials vowed to prevent just such a humanitarian crisis when they insisted on a withdrawal of Serbian police and Yugoslav army units from Kosovo in October. The withdrawal was never completed despite a threat of NATO air strikes and NATO officials say governmnent forces in Kosovo have been reinforced in recent weeks. Their presence, coupled with the belligerence of the ethnic Albanian Kosovo Liberation Army (KLA), has sparked sporadic fighting that the United Nations refugee agency said last week had driven at least 9,000 people from their homes in a few days. The group of 350 on the hill had blankets and a few plastic sheets but no shelter.