The Israeli military on Monday called on people in southern Lebanon to immediately evacuate homes and other buildings where Hezbollah stores weapons and said it was carrying out “extensive strikes” against the militant group.

It was the first warning of its kind in nearly a year of low-level conflict along the border and came after a particularly heavy exchange of fire on Sunday. Hezbollah launched over 100 rockets, missiles and drones into northern Israel in retaliation for recent strikes that killed a top commander and dozens of its fighters.

The escalating strikes and counterstrikes have raised fears of an all-out war, even as Israel is still battling the Palestinian Hamas in Gaza and trying to return scores of hostages taken in the Oct 7 attack. Hezbollah has vowed to continue its strikes in solidarity with the Palestinians and Hamas, a fellow Iran-backed militant group.

An Israeli military official said Israel is focused on aerial operations and has no immediate plans for a ground operation. The official, speaking on condition of anonymity in keeping with regulations, said the strikes are aimed at curbing Hezbollah's ability to launch more strikes into Israel.

Lebanese media reported that residents received text messages urging them to move away from any building where Hezbollah stores arms until further notice.

“If you are in a building housing weapons for Hezbollah, move away from the village until further notice,” the Arabic message reads, according to Lebanese media.

It was not immediately clear how many people would be affected by the Israeli orders. Communities on both sides of the border have largely emptied out because of the near-daily exchanges of fire.

Israel has accused Hezbollah of transforming entire communities in the south into militant bases, with hidden rocket launchers and other infrastructure. That could lead it to wage an especially heavy bombing campaign, even if no ground forces move in.

Israel carried out dozens of airstrikes on southern Lebanon early Monday.

Residents of different villages in southern Lebanon posted photos on social media of their hometowns that were being struck. The state-run National News Agency also reported airstrikes on different areas.

An Israeli airstrike on a Beirut suburb on Friday killed a top Hezbollah military commander and more than a dozen fighters, as well as dozens of civilians, including women and children.

Last week, thousands of communications devices, used mainly by Hezbollah members, exploded in different parts of Lebanon, killing 39 people and wounding nearly 3,000. Lebanon blamed Israel for the attacks, but Israel did not confirm or deny its responsibility.