The peacekeeping force known as UNIFIL described the Tuesday morning incident as “one of the most serious attacks on UNIFIL personnel and assets” since the cessation of hostilities in November that ended the 14-month Israel-Hezbollah war.

UNIFIL said Israeli drones dropped four grenades close to the peacekeepers, who were working to clear roadblocks that hindered access to a U.N. position along the border line. One grenade hit within 20 meters (yards) and three others within approximately 100 meters of U.N. personnel and vehicles, it said, adding the drones were observed returning toward Israel. No one was hurt in the attack.

UNIFIL said the Israeli military had been informed in advance of the peacekeeping force’s road clearance work in the area, southeast of the village of Marwahin less than a kilometer (mile) from the border line.