Jordan's Foreign Minister Ayman Safadi made a surprise visit to Ramallah in the West Bank on Thursday, multiple media sources reported.
According to Israel's Kan public broadcaster, Safadi is holding an emergency meeting with Palestinian Authority President Mahmoud Abbas ahead of the start of formal debates on annexation in the Knesset on July 1.
Jordan has been firmly opposed to Israel's plans to unilaterally apply its sovereignty to parts of the West Bank, with top Jordanian officials repeatedly urging their Israel counterparts not to proceed with their planned move.
Jordan's King Abdullah II hinted that should Jerusalem apply its sovereignty to the contentious areas, it would likely end the peace treaty between Israel and Jordan.
Under the Israeli government's coalition deal, signed between Prime Minister Benjamin Netanyahu's Likud and Defense Minister Benny Gantz's Blue & White, the annexation plan can be put to a government vote in two weeks' time.
But, there are conflicting reports on whether Washington would give a green light to the move - a must under the coalition treaty - since the areas set to be annexed have not yet been agreed upon.
According to reports in the Israeli media, during a meeting on Wednesday between Netanyahu and Gantz, the prime minister presented four annexation scenarios, including a mostly symbolic one, but no agreement had been reached.