Jordan's opposition Islamists urged King Abdullah II on Wednesday to call an emergency Arab summit in a bid to protect Jerusalem from "Judaisation."
"We urge you to lead Arab, Muslim and international efforts to protect Al-Aqsa mosque," in Jerusalem's Old City, Hamzeh Mansur, head of the Islamic Action Front (IAF), said in a letter to the king.
"We suggest holding an emergency Arab summit to protect Islamic and Christian holy sites in Jerusalem," Mansur said in the letter, posted on the IAF's website.
The Palestinians want east Jerusalem as the capital of their future state and adamantly reject Jewish settlement construction in the territory.
Unrest has been on the rise in east Jerusalem's Old City compound that houses the Al-Aqsa, erupting into violent clashes between Palestinians and Israeli police.
It is referred to by Muslims as Al-Haram Al-Sharif and considered the third holiest site in Islam, while it is known to Jews as the Temple Mount and is revered as Judaism's most sacred place.
"The occupation forces, settler gangs and hardliners have been recently active and working on the Judaisation of Jerusalem," Mansur told the king.
"We fear that one day Al-Aqsa mosque would vanish."
The IAF, is the political arm of Jordan's Muslim Brotherhood.
Qatar's emir Sheikh Hamad bin Khalifa Al-Thani told the International Conference on Jerusalem in Doha on Sunday that the United Nations should probe Jewish settlement expansion in annexed Arab east Jerusalem, warning that "we must act quickly to stop the Judaisation of Jerusalem,"
Jordan, the custodian of Muslim holy sites in Jerusalem, has a 1994 peace treaty with Israel.