He told reporters after briefing the U.N. Security Council behind closed doors Monday that it is "critically important" that the status quo which has been in place at the site since 1967 is preserved. "As the summit term president of the Organization of Islamic Cooperation [OIC], I call for the worldwide community to act to immediate end practices that restrict freedom of worship".
The area around the Temple Mount, the holiest site in Judaism and also the location of the Haram A-Sharif, the third holiest site in Islam, has been riven with tensions since July 14 when three Arab-Israelis shot and killed two Israeli police officers at the holy site before they were shot to death.
Israeli authorities say the July 14 attackers smuggled guns into the site and emerged from it to shoot the policemen. He also wished a speedy recovery to the hundreds of wounded, saying that Turkey is against every type of violence.
The 37-acre (15-hectare) compound, known to Muslims as the Noble Sanctuary and to Jews as the Temple Mount, has been a lightning rod for the rival religious and national narratives of the two sides and has triggered major confrontations in the past.
The emergency protest called for by the Palestinian Forum in Britain saw protesters from all ages, and organizers said they held the protest to attract attention to Israel's aggression in Jerusalem.
The installation of metal detectors caused civil disobedience and spurred protests by Palestinians, who viewed the new measures as Israel's attempt to impose further control on the holy site.
"(It has) the potential to have catastrophic costs well beyond the walls of the Old City, well beyond Israel and Palestine, well beyond the Middle East itself", Mladenov said. The jews can not enter at certain times and do not have the right to pray there.
The move enraged the Muslim world and triggered violence.
There was no immediate public reaction from Prime Minister Benjamin Netanyahu. More than 2,000 mourners joined his funeral procession, and they chanted slogans in support of the Jerusalem shrine and portrayed him as a "martyr" who had defended Muslim rights.
Details of the advanced technologies the cabinet spoke of were not clear, though cameras were installed at entrances to the site this week.
The top decision-making forum met overnight and into early Monday to discuss the latest developments, including an incident in which a security guard at the country's embassy in Jordan opened fire, killing two Jordanians, after being attacked.
Jordan is the Muslim custodian of the site which is also holy to Jews.
Jordan insisted on questioning the security guard, while Israel said he had diplomatic immunity.
Clashes erupted between Israeli security forces and Palestinians around the Old City, elsewhere in annexed east Jerusalem and in the occupied West Bank, leaving three Palestinians dead.
In 2000, then Israeli opposition leader Ariel Sharon's visit to the compound helped ignite the second Palestinian intifada, or uprising, which lasted more than four years.
World leaders are speaking out against Friday's violent crackdown on protesters by Israeli security forces.
Al-Sisi has called on Israel to calm the situation in Jerusalem, but these remarks are quite softer compared to a September 2015 statement where he accused Israel of violating the site's sanctity.