The United Nations Interim Force in Lebanon (UNIFIL) said Wednesday that Israeli drones dropped four grenades near its peacekeepers in southern Lebanon on Tuesday as they worked to clear roadblocks along the Israeli border.

The grenades landed between 20 and 100 meters from UNIFIL personnel and vehicles near the village of Marwahin, the agency added.

UNIFIL statement on attack on peacekeepers clearing roadblocks:

Yesterday morning, Israel Defense Forces (IDF) drones dropped four grenades close to UNIFIL peacekeepers working to clear roadblocks hindering access to a UN position close to the Blue Line.

— UNIFIL (@UNIFIL_) September 3, 2025

According to UNIFIL, it had notified the IDF in advance of the road clearance work. Following the attack, operations were halted “out of concern for the safety of peacekeepers.”

Although no injuries were reported, the UNIFIL described the incident as “one of the most serious attacks” on its forces since the November ceasefire that ended a 14-month conflict between Israel and Hezbollah.

“Any actions endangering UN peacekeepers and assets, and interference with their mandated tasks are unacceptable and a serious violation of Resolution 1701 and international law,” it added. 

The IDF told The Jerusalem Post that troops had identified “suspicious activity” and deployed stun grenades to deter what they believed was a threat. After reviewing the incident, the military said it provided UNIFIL with an explanation and stressed that it would never deliberately target its personnel.

The incident follows the UN Security Council’s recent decision to end UNIFIL’s mandate by the end of 2026, under pressure from the U.S. and Israel. The mission has operated in southern Lebanon since 1978.

Tensions remain high along the border as Israeli strikes in Lebanon persist despite the ceasefire, with near-daily attacks on suspected Hezbollah positions. On Wednesday, four people were killed in separate Israeli airstrikes in southern Lebanon, according to the Health Ministry.