The three negotiating teams were to meet in the region late in the day to discuss a way out of the deadlock, a source close to the talks said.
Meanwhile, US Secretary of State John Kerry scrambled to save his faltering Middle East peace efforts hours after the Palestinians publicly reneged on a commitment to freeze moves to join 15 international treatises.
The announcement by president Mahmud Abbas was a blow to Kerry's frenetic efforts to resolve a dispute over Palestinian prisoners and find a way to extend the fragile talks with Israel beyond an April 29 deadline.
Shortly afterwards, Kerry said he was cancelling an imminent a trip to the West Bank town of Ramallah.
Despite the move, a senior Palestinian official insisted Ramallah was committed to the US peace efforts and hoped Kerry's efforts would be renewed "in the coming days".
"Kerry knows the reality. We don't want these efforts to finish," said Yasser Abed Rabbo, secretary general of the Palestine Liberation Organisation's executive committee.
Palestinian foreign minister Riyad al-Malki echoed the support for talks, but said the membership request for the international conventions had been submitted.
A senior State Department official told AFP that both sides had "taken unhelpful steps over the last 24 hours," but added neither the Palestinians nor the Israelis wanted to end the negotiations.
"After... Weathering previous moments of tension and public flare-ups, we've learned it's short-sighted and premature to make an immediate determination on what will be possible," the official said.
Abbas's announcement came soon after Kerry had wrapped up a 15-hour visit to Jerusalem during which he met twice with Israeli Prime Minister Benjamin Netanyahu.
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