The U.N. peacekeeping force in Lebanon (UNIFIL) announced Monday that its headquarters in Naqoura had been hit by a projectile, probably launched by a "non-state actor", after Hezbollah declared it had targeted Israeli forces in the same town.

Since Saturday, the coastal town in Lebanon's far south on the border with Israel, has been one of the flashpoints between Hezbollah and the Israeli army.

The Israeli military on Monday struck a bridge linking southern Lebanon with the eastern Bekaa region, state media reported, after warning it would hit the crossing.

The strike is part of a series of attacks on bridges over Lebanon's Litani River, located around 30 kilometers north of Israel, including the key Qasmiyeh bridge on Sunday.

As it engages in heated battles with Hezbollah in a number of Lebanese border villages, Israel has bombed at least five of the six principal bridges across a river dividing the country's south.

Military experts agree the strikes are an attempt to cut off the region south of the Litani river from the rest of Lebanon, but are divided on whether the move will change the course of the fighting.

Mayors of several towns in southern Lebanon said the Israeli military had ordered them to force out the displaced who had escaped their Shia-majority towns, considered Hezbollah strongholds, during the war with Israel.

Since Lebanon was pulled into the Middle East war following Iran-backed Hezbollah's March 2 rocket fire on Israel, more than a million people have been displaced by Israeli strikes.

U.S. President Donald Trump told reporters on Monday that his envoys held talks with a senior official in the Iranian leadership and claimed the parties are in agreement on many points.

Trump walked back his threat to strike Iran's power plants on Monday, citing productive negotiations.

President Donald Trump said Monday that there are "major points of agreement" in U.S.-Iran talks which he said must result in Tehran giving up its nuclear ambitions and enriched uranium stockpile.

Iranian media said on Monday there were no negotiations between Tehran and Washington after US President Donald Trump announced talks towards ending the war.

"There are no talks between Tehran and Washington," said Mehr news agency citing Iran's foreign ministry, adding that Trump's statements were part of a push "to reduce energy prices".

President Donald Trump has extended his deadline for Iran to reopen the Strait of Hormuz, saying the U.S. will hold off on power plant strikes for five days.

Trump made the announcement on his Truth Social site Monday, hours ahead of a deadline later in the day.

Prime Minister Nawaf Salam has said that members of Iran's Revolutionary Guards are commanding Hezbollah's operations in the group's ongoing war against Israel.

In an interview Sunday with the Al Hadath network, Salam once again lashed out at Hezbollah for dragging Lebanon into the Middle East war by firing rockets on Israel.

The Israeli military has announced it was expanding its ground campaign against Hezbollah in Lebanon, warning of a lengthy operation, after Beirut condemned what it called Israel's flagrant violations of Lebanese sovereignty.

Israeli forces were ordered Sunday to destroy bridges they said were used by the Hezbollah to cross the Litani River, and Lebanese official media reported Israeli raids in the south.