Palestinian Authority Chairman Mahmoud Abbas resigned on Saturday as head of the Palestine Liberation Organization's (PLO) Executive Committee in a bid to force new elections for the top body, says Wassel Abu Yousef. Yousef also goes on to report that more than half of the 18-member committee have also stepped down, according to Israel National News. However, the 80-year-old Abbas still retains his post as Palestinian president.

"The resignation of the president of the executive committee Mahmoud Abbas and more than half of its members have created a legal vacuum, and therefore the Palestine National Council (PNC) has been asked to meet in one month to elect a new executive committee," Yousef said in a statement.

Yousef, a senior PLO committee member, added that the resignations will not take effect until the PNC meets. The PNC is the 740-member Palestinian Parliament. Members live in the Palestinian territories and have not met in 20-years.

Abbas took up the position of the Ramallah-based government in 2005, a year after he became the PLO's chief. On several occasions, he has threatened to resign or dissolve the Palestinian Authority.

The PLO's chief negotiator and well-known political figure Saeb Erekat will probably replace Abbas, according to Al Arabiya News, reporting on previous rumors of the Abbas resignation. Saeb Erekat is a close aide to Abbas and had replaced Abed Rabbo as secretary after Rabbo was ousted by Abbas for becoming an increasingly vocal critic of the leader.

Abbas has faced questions about his legitimacy to rule within the Palestinian territories, where he was elected to what was originally meant to be a four-year term in 2005, according to The New York Times. New presidential and legislative elections for the Palestinian Authority have been prevented by an internal rift between Abbas's Fatah party and the rival Islamic group, Hamas, which won the last legislative elections in 2006 and seized control of Gaza the next year.