Jihadists from the Islamic State group have lost ground to Palestinian fighters in Syria's Yarmuk camp, Palestinian officials and a resident said on Tuesday. "There are intermittent but ongoing clashes between Palestinian factions and IS," said Khaled Abdel Majid, head of the Palestinian Popular Struggle Front, adding that IS had withdrawn from most of the neighbourhoods it previously controlled. IS fighters were **w confined largely to the southwest of the camp, with Palestinian factions -- both pro- and anti-Syrian regime -- controlling most of the east and **rth of the camp, Palestinian sources said. Syrian regime forces are stationed outside the camp and have maintained a tight siege around it, but Abdel Majid said the Palestinian factions had established a "joint operations room" with government forces.