The head of the Palestinian Authority's commission for prisoners, Qaddura Fares, said on Sunday that Israeli officials had told him at one point their side had made 105 arrests.

But he said Israel had not announced the number publicly and there was "no detail about what has become of these people".

"We fear they may have been killed after being detained and interrogated," he told AFP.

The Israeli military told AFP on Monday that it could not comment on the issue at this stage.

Multiple local and international reports have documented instances of such detentions by Israel.

The UN Humanitarian Affairs Office OCHA said in a report that Israeli forces had detained people walking to southern Gaza from the north on the Salah al-Din road during the Israeli operations and a truce that came into force on November 24.

Red Cross medical worker Ramadan Hossu said in a video released by his organization that Israeli forces strip-searched and handcuffed him after detaining him on the road.

One displaced Gaza resident, Sahar Awwad, told AFP that Israeli soldiers detained her son Mohammed as he tried to leave southern Gaza on November 12.

"He was freed after nine days" after "undergoing torture," Awwad said.

OCHA said families had been separated by Israeli forces at a checkpoint on the Salah al-Din road.

One child "had to cross through the checkpoint on his own following his father's arrest," it said.

* This story has been edited by Ahram Online