The Israeli military said it had launched an operation meant to “expose and thwart” tunnels built by the Hezbollah militant group and stretching from Lebanon into northern Israel.
The military said the tunnels were not operational and that its work to expose them, which began on Tuesday, was taking place in Israeli territory.
The military did not disclose how many tunnels snake into Israeli territory from Lebanon or how long the operation would last.
Israel views Iranian-backed Hezbollah and its vast weapons cache as a major threat. The two fought a monthlong war in 2006.
The Israeli operation comes hours after Israeli Prime Minister Benjamin Netanyahu made a last-minute trip to Brussels to meet U.S. Secretary of State Michael R. Pompeo.