Lebanese President Joseph Aoun. AFP
Aoun "condemned Israel's targeting and destruction of infrastructure and vital facilities in southern Lebanon, particularly the Qasmiyeh bridge over the Litani River and other bridges", a presidency statement said.
"These attacks represent a dangerous escalation and flagrant violation of Lebanon's sovereignty, and are considered a prelude to a ground invasion," Aoun said, hours after Israel's defence minister said the army had been ordered to destroy more bridges allegedly being used by Hezbollah.
Israel said it struck targets in south Lebanon on Sunday shortly after the Israeli military was ordered to destroy bridges across the Litani River.
Lebanese official media reported Israeli raids in several areas of the south, while an AFP correspondent saw smoke billowing from a key bridge that was hit outside the city of Tyre, in an escalation in violence in Lebanon after two days of relative reprieve.
Israel has sent troops into Lebanon and carried out extensive airstrikes in the country, while Hezbollah has kept up rocket barrages.
Israel's military said it began "a wide wave of strikes" on southern Lebanon.
Earlier Sunday, Israel said rocket fire from Lebanon killed one person.
Two Israeli soldiers had previously been killed in southern Lebanon, according to the military.
Lebanon's health ministry said four people were killed on Sunday in two strikes in the south, while authorities have reported 1,029 dead in three weeks of conflict and more than one million displaced.
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