The UNIFIL said in a statement that Israeli drones dropped four grenades close to its peacekeepers working to clear roadblocks near the Blue Line de facto border on Tuesday morning.

“One grenade impacted within 20 meters (65 feet) and three within approximately 100 m (328 ft) of UN personnel and vehicles. The drones were observed returning south of the Blue Line (de facto border),” the statement said.

No injuries occurred, and the work was suspended on Tuesday for the safety of the peacekeepers, the statement added.

It noted that the Israeli army had been informed beforehand about the scheduled road work southeast of Marwahin village.

“This is one of the most serious attacks on UNIFIL personnel and assets since the cessation of hostilities agreement of last November,” the mission said.

The UNIFIL called “any actions endangering UN peacekeepers and assets, and interference with their mandated tasks” unacceptable and a flagrant violation of the UN Resolution 1701 and international law.

The UNIFIL has operated in southern Lebanon since 1978 and was significantly reinforced under the UN Security Council Resolution 1701 after the 2006 war between Israel and the Lebanese group Hezbollah.

Israel launched a military offensive in Lebanon on Oct. 8, 2023, which escalated into a full-scale war by September of the following year, killing more than 4,000 people and injuring around 17,000.

A ceasefire was reached in November, but Israeli forces have conducted near-daily attacks in southern Lebanon, claiming to target activities of the Hezbollah group.

Under the truce, Israel was supposed to fully withdraw from southern Lebanon by Jan. 26, but the deadline was extended to Feb. 18 after Tel Aviv refused to comply. Israel still maintains a military presence at five border outposts.