BBC News with Marion Marshall

Thousands of Palestinian refugees have been forced to flee from their camp in Syria, which has been hit by heavy fire from government forces

bombard

ing the port city of Latakia. Reports said dozens of others have been injured. A United Nations spokesman, Christopher Gunness, told the BBC that at least four Palestinians have been killed. He said his staff in the camp needed urgent humanitarian assistance for those remaining.

"We have reports that more than half of the camp - the camp is home to 10,000 Palestinian refugees - more than half of them have fled. Some were told to leave by the Syrians; others simply fled. We have no idea where these people are. We have no idea what kind of medical attention they need, which is why we are calling on the Syrian authorities to give us

expeditious

access. We need to get in there to assess the need to see what people are suffering, and we need

thereafter

to take in urgently needed humanitarian supplies."

Turkey has warned Syria to end immediately and

unconditionally

the use of force against anti-government demonstrators. The Turkish Foreign Minister Ahmet Davutoglu said the continued attacks on civilians could not be excused. He said this was Ankara's final word and that unless the violence ceased, Turkey would

break off

all dialogue.

The judge at the trial of the former Egyptian President Hosni Mubarak has ruled that future