Early Friday morning, three Arab citizens of Israel attacked Israeli police on the Temple Mount, killing two.
Netanyahu held a security situation assessment following the terrorist attack near Lions' Gate in Jerusalem's Old City, in which two policemen were killed and a third sustained minor injuries.
Another Palestinian suspect was lightly wounded and arrested, the statement from the military read.
Two of the previous attackers were Jordanians.
Israel installed the metal detectors after Friday's attack near the holy site that saw three Arab Israelis open fire on Israeli police.
The speaker also pointed to Israel's "occupation" over Islamic holy sites in Jerusalem along with its "oppression" and "tyranny" as a justification for "continued resistance" against Israel.
Israel says the site won't reopen before Sunday. I salute them and their valor.
Israel blames the violence on incitement by the Palestinian leadership.
Clashes erupted outside Jerusalem's al-Aqsa mosque compound on Sunday as Israeli authorities implemented new security measures at the Mosque entrance. Police are investigating how the attackers managed to smuggle in a handgun, sub-machine gun and knife.
In a statement, Al-Azhar also condemned arresting Mufti of Jerusalem Mohammed Hussein and the former Mufti of Jerusalem and Imam of Al-Aqsa Ekrema Sabri. Only Muslim residents of Jerusalem were allowed to enter. Palestinians fear an increased incursion of Israeli right-wing groups into the mosque compound.
Al Jazeera reported that following the incident, Israeli police cleared the Al-Aqsa Mosque and closed it to the public.
It is located in east Jerusalem, occupied by Israel in 1967 and later annexed in a move never recognised by the worldwide community.
Separately, Palestinian sources said that the Hamas Movement, which controls the Gaza Strip, was now looking to gain a foothold in Algeria, with an aim to gather the party's leaders after the majority of them left the Qatari capital, Doha, and resided in other countries.
The attack forced the government of Israel to temporarily close the Temple Mount/Haram al Sharif to conduct its investigation.
Palestinian president Mahmud Abbas conveyed a similar message to Netanyahu when the two spoke by phone on Friday in the wake of the attack.
At least 255 Palestinians - a lot of them attackers, Israel says - have also been killed in that period, news agencies report.