Israel will keep troops in several posts in southern Lebanon past a deadline for them to withdraw, a military spokesperson says.

It came as Israeli leaders sought to reassure northern residents that they could return home safely.

Under a truce deal brokered by Washington in November, Israeli troops were granted 60 days to withdraw from southern Lebanon where they had waged a ground offensive against fighters from Lebanon’s armed group Hezbollah since early October.

That deadline was extended to February 18, but Israeli and Lebanese officials as well as foreign diplomats had anticipated that the military would retain some troops on parts of the Lebanese side of the border.

“We need to remain at those points at the moment to defend Israeli citizens, to make sure this process is complete and eventually hand it over to the Lebanese armed forces,” military spokesperson Lieutenant Colonel Nadav Shoshani said, adding the move was in accordance with the mechanism of the ceasefire agreement.

He said the locations were close to Israeli communities or occupied strategic vantage points overlooking Israeli towns such as Metula, at the northernmost point of Israel.

“Basically the security situation is very, very complex,” he said.

A Lebanese official and two foreign diplomats said Israeli troops would likely leave villages in south Lebanon but stay in overlook points to reassure residents of northern Israel who are set to return home on March 1.

Tens of thousands of people were displaced from northern Israel by Hezbollah rocket fire and more than a million people in Lebanon fled Israeli air strikes in the year-long war conflict playing out in parallel with the Gaza war.

The fighting ended in late November with a truce ordering Israeli troops to withdraw from south Lebanon, Hezbollah fighters and arms to leave and Lebanese troops to deploy.

The ceasefire deal stipulates that only “official military and security forces” in Lebanon can carry arms and that the Lebanese government must prevent any transfers of arms or related material to non-state armed groups.

Its language – sharper than previous United Nations Security Council Resolutions – appears to spell out ways that the Lebanese state will be expected to constrain Hezbollah, diplomats and analysts said.

The deal’s implementation is being overseen by a committee chaired by the US and France.

Lebanon’s President Joseph Aoun, who has said Israeli troops should leave by the February 18 deadline, said on Monday he was “afraid that the complete [Israeli] withdrawal will not be achieved tomorrow”.

The two diplomats said talks were continuing on alternatives to Israeli troops staying, including possibly deploying more UN peacekeepers to the border.

France has proposed that UN forces including French troops replace Israeli forces at key border points.

Hezbollah said on Sunday that Israeli forces still in Lebanon after Tuesday would be considered an occupying force.

Israel occupied southern Lebanon for 22 years, before withdrawing in 2000 after continued attacks on its positions in occupied Lebanese territory by Hezbollah, which was founded in 1982 to counter Israel’s invasions.

In the latest war, Israel and Hezbollah exchanged fire for nearly a year, mostly around the border. Israel significantly escalated in September, eliminating much of Hezbollah’s top leadership in air strikes and sending ground troops into south Lebanon.

-AAP