Israeli jets struck seven crossing points along the Syria-Lebanon border on Friday, aiming to cut the flow of weapons to the Iranian-backed Hezbollah group in southern Lebanon.
Israeli troops also seized a truck mounted with a 40-barrel rocket launcher in southern Lebanon, part of a haul from various areas that included explosives, rocket-propelled grenade launchers and AK-47 automatic rifles, the military said.
The commander of the Israeli Air Force, Major General Tomer Bar, said Hezbollah was trying to smuggle weapons into Lebanon to test Israel's ability to stop them.
"This must not be tolerated," he said in a statement.
Under the terms of a Nov. 27 ceasefire agreement, Israel is supposed to withdraw its troops from southern Lebanon in phases while unauthorized Hezbollah military facilities south of the Litani River are to be dismantled.
However, each side has accused the other of violating the agreement, intended to end more than a year of fighting that began with Hezbollah missile strikes on Israel in the aftermath of the Hamas-led attack of Oct. 7, 2023, from Gaza.
On Thursday, the United Nations peacekeeping force in Lebanon called for Israeli forces to withdraw, citing what it said were repeated violations of the deal.
Israel, which destroyed large parts of Hezbollah's missile stocks during weeks of operations in southern Lebanon, has said it will not permit weapons to be smuggled to Hezbollah through Syria.
Israel has also conducted attacks against the Iranian-backed Houthi militias in Yemen in recent days and pledged to continue its campaign against Iranian-backed militant groups across the region.