A leader of the Iranian-backed militia said its latest barrage was “just the beginning,” and an Israeli military official said, “Our strikes will intensify.”

Israel and the Hezbollah militant group exchanged heavy fire across the Lebanese border on Sunday, fueling fears of a wider conflict in the region.

Hezbollah has launched over 100 rockets across a wider and deeper area of northern Israel, with some landing near the city of Haifa, as the sides appeared to be spiraling toward all-out war following months of escalating tensions.