Israel's Foreign Minister Gideon Saar said Monday that his country's military takeover of the buffer zone along its border with Syria was a "limited and temporary step." 

"This is a limited and temporary step we took for security reasons," Saar said in a press conference at the foreign ministry in Jerusalem. 

Prime Minister Benjamin Netanyahu announced Sunday that he had ordered the Israeli military to "seize" a demilitarized buffer zone on the border with Syria after the overthrow of Bashar al-Assad in Damascus.

The Israeli premier said a 50-year-old "disengagement agreement" between the two countries had collapsed and "Syrian forces have abandoned their positions".

As a result, he said, "I directed the Israeli [military] yesterday to seize the buffer zone and the commanding positions nearby. We will not allow any hostile force to establish itself on our border."

The announcement, which Netanyahu made while visiting the Israeli-occupied Golan Heights which abut the buffer zone, came after the military said it had deployed forces to the area.

Israel had already said the day before, as the Islamist-led rebels swiftly advanced across Syria, that its soldiers entered the U.N.-patrolled buffer zone to assist peacekeepers in repelling an attack.

On Sunday, the army announced a troop deployment there, citing "the possible entry of armed individuals into the buffer zone."

"Following the recent events in Syria... the Israeli [military] has deployed forces in the buffer zone and in several other places necessary for its defense, to ensure the safety of the communities of the Golan Heights and the citizens of Israel," a military statement said.

Israeli forces "will continue to operate as long as necessary in order to preserve the buffer zone and defend Israel," it added.

The statement stressed that the Israeli military "is not interfering with the internal events in Syria."

Also Sunday, Israel's military imposed a curfew for residents of five Syrian towns in a demilitarized buffer zone of the Golan Heights which Prime Minister Benjamin Netanyahu ordered troops to seize.

"For your security, you must stay at home and not go out until further notice," Avichay Adraee, an Israeli army Arabic spokesman, said on X, after Netanyahu's order earlier Sunday for the military to seize the zone, which abuts the Israeli-occupied Golan Heights, after the fall of Syria's president.

Since the rebel coalition, led by Islamist group Hayat Tahrir al-Sham, began its renewed offensive against government forces on Nov. 27, Syrian government forces have left positions near the Israeli-held Golan, according to a war monitor.

Rami Abdel Rahman, head of the Syrian Observatory for Human Rights, said on Saturday that Syrian army forces had withdrawn from positions in Quneitra province, which includes part of the Golan Heights.

Most of the plateau has been occupied since 1967 by Israel, which later annexed it in a move not recognized by most of the international community.

In 1974, the buffer zone was established, separating the Israeli-held and Syrian territories, with U.N. peacekeepers stationed there since.

A U.N. Peacekeeping spokesperson said on Saturday that UNDOF personnel had observed "unidentified armed individuals in the area of separation, including approximately 20 who went into one of the mission's positions in the northern part of the area of separation".

The Israeli army said it was "assisting the UN forces in repelling the attack".

The UN spokesperson said that "peacekeepers continue to carry out their mandated activities on the Golan."

On Sunday, Lebanese media outlets reported an Israeli strike on Quneitra targeting an arms depot. The Israeli military declined to comment.

In a separate statement, the Israeli military said schools in the northern Golan Heights, in an area covering four Druze towns, would move to online teaching, also declaring a "closed military zone" in agricultural lands in the area.

Early in Syria's war, which began in 2011 following the repression of anti-government protests, rebel forces and jihadist groups had taken over parts of Quneitra province.

In August 2014, Islamist rebels attacked UNDOF and took more than 40 Fijian peacekeepers hostage, holding them captive for almost two weeks.