The UN Interim Force in Lebanon (UNIFIL) has said that Israeli drones dropped four grenades close to peacekeepers who were working to clear roadblocks hindering access to a UN position, Reuters reports.

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

One grenade impacted within 20 metres and three within approximately 100 metres of UN personnel and vehicles.