The Palestinian leadership called on the Arab League (AL) to study Israel's response to the political letter that Palestinian President Mahmoud Abbas addressed to Israel last month on the future of the peace process, a senior Palestinian official said on Sunday.

Chief Palestinian negotiator Saeb Erekat's announcement was made at the end of a Palestine Liberation Organization (PLO) executive committee meeting chaired by Abbas and held in Ramallah to study the Israeli response.

"The Arab League meeting will be devoted to study the content of Israeli Prime Minister Benjamin Netanyahu's written response to President Abbas' political letter and will decide on the future of ties with Israel," Erekat said, but didn't say when the AL committee would convene.

On Saturday, Netanyahu's aide Yitzhak Mulkho met with senior Palestinian officials in Ramallah, including Erekat, and handed them a written letter from Netanyahu, which included Israel's response to Abbas' questions addressed in the letter sent to Netanyahu on April 17.

Earlier Sunday, the PLO said that Netanyahu's response to Abbas ' letter "didn't carry clear answers."

Yasser Abed Rabbo, Secretary General of the PLO's executive committee, who read the statement before reporters in Ramallah at the end of the PLO executive committee meeting, said that "the Israeli response to the letter is unclear."

"The Israeli letter didn't include clear answers to central issues that obstruct the resumption of the stalled peace process, mainly settlement, which had recently increased, mainly in Jerusalem," said Abed Rabbo.

He added that the Israeli response "didn't include clear answers to the recognition of 1967 borders as the borders of the future Palestinian state, as well as to the issue of releasing prisoners from Israeli jails."

The executive committee of the PLO called on the International Quartet, which comprises the United States, the European Union, Russia and the United Nations, "to strongly intervene to correct the track of the peace process."

The PLO condemned that Israeli government continues to make decisions related to largely keeping settlement construction in the Palestinian territories and in Jerusalem.

The statement stressed that settlement had been and will always be "illegal," warning that "Israel is deceiving the world and keep settlement activities, including the confiscation of lands, owned by the Palestinian people only."

The peace talks between Israel and the Palestinians had stopped in October 2010 due to disputes on Israel's insistence to keep settlement building in the West Bank and east Jerusalem.

The Palestinians insist not to resume any direct or indirect peace talks with Israel before the latter clearly declares a complete cessation of settlement activities in the territories occupied in 1967, including east Jerusalem.

The Palestinian leadership threatened that if Israel insists not to stop settlement and not recognize the two-state solution based on 1967 borders, they would resume their efforts to unilaterally apply to the United Nations and demand a full recognition of a Palestinian state.