The Palestine Liberation Organisation has rejected requesting the Syrian military to launch military action against Islamic State in the Yarmouk refugee camp in Damascus.
A statement on Thursday said the PLO refused to be drawn into the “hellish conflict” in Syria.
"We refuse to be drawn into any armed campaign, whatever its nature or cover, and we call for resorting to other means to spare the blood of our people and prevent more destruction and displacement for our people of the camp," it said.
Palestinian militant group Aknaf Beit al-Maqdis has been coordinating with Syrian rebel forces in their fight against IS and the Syrian government.
The United Nations said it is extremely concerned about the safety of Palestinians and Syrians inside the camp.
"In the horror that is Syria, the Yarmouk refugee camp is the deepest circle of hell," UN Secretary General Ban Ki-moon said on Thursday.
"A refugee camp is beginning to resemble a death camp. The residents of Yarmouk - including 3,500 children - are being turned into human shields."