Israel on Wednesday declared all areas south of Lebanon’s Zahrani River, which runs roughly 40 kilometers (25 miles) from the border, “combat zones” and urged residents to evacuate ahead of strikes against Hezbollah.

The first such sweeping warning since an April 17 ceasefire came as Israel’s military launched broad raids on the country’s south and east, and as Hezbollah said its fighters clashed with Israeli forces beyond an Israeli-declared “Yellow Line” in the south.

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It also came as many Lebanese tried to celebrate the Muslim holiday of Eid al-Adha.

Israel this week vowed to intensify operations in Lebanon and said it was expanding ground operations there, a move that comes ahead of talks on Friday between Lebanese and Israeli military delegations at the Pentagon and a new round of direct negotiations next week aimed at ending the hostilities.