Iran's Revolutionary Guards threatened on Tuesday to conduct "heavy" missile and drone attacks on Israel in what it described as support for Lebanese and Palestinian civilians.

"We warn the regime's criminal army that if its crimes against civilians in Lebanon and Palestine persist," Israeli forces "will be the target of heavy missile and drone strikes", the Guards said in a statement.

The Israeli military issued on Tuesday evacuation warnings for the southern towns of Tyre, Burj al-Shamali and al-Maashouq and ordered the residents of nine southern towns to evacuate north of the Zahrani river.

The Israeli army ordered the residents of Ghandourieh, Bir Salases, Deir Ntar, Deirkifa, Burj Qalaway, Kfardounin, Sultanieh, Shehabieh and Qantara to evacuate north of the Zahrani river, after earlier strikes on villages in south and east Lebanon, including Miye w Miye near Sidon, Khiam on the border, and Shemstar in the east.

French President Emmanuel Macron, hosting an event attended by a Lebanese minister, on Monday issued a warning that "occupation" does not bring security, in a message seen as directed at Israel.

"No occupation, no form of colonization -- not here, not in the West Bank, nor anywhere else -- is able to ensure the security of anybody," Macron said as he opened an exhibition at the state-funded Institute of the Arab World in Paris.

An Israeli strike on Bshamoun, south of Beirut, killed three people including a three-year-old girl on Tuesday, Lebanon's health ministry said, while strikes on the capital's southern suburbs continued throughout the night.

"The Israeli enemy raid on the town of Bshamoun in the Aley district resulted, in a preliminary toll, in the martyrdom of two citizens and the injury of five others," the ministry had earlier said in a statement.

Israeli Prime Minister Benjamin Netanyahu said Monday that he spoke with Donald Trump, saying that the U.S. president believed U.S.-Israeli military gains in Iran could be converted into a negotiated agreement that protects Israel's interests.

"President Trump believes there is a chance to leverage the tremendous achievements of the IDF (Israeli army) and the U.S. military in order to realize the war's objectives in an agreement -- an agreement that will safeguard our vital interests," Netanyahu said in a video statement.

At least three Israeli strikes hit Beirut's southern suburbs on Monday, hours after the Israeli army issued a warning for residents of the area to evacuate.

Live broadcasts showed clouds of smoke over the southern suburbs, which are considered a Hezbollah stronghold and have not been hit since Friday night.

A series of strikes hit Beirut's southern suburbs on Monday and early Tuesday, the first attack on the Hezbollah stronghold in days, as Israel's military said it captured two members of the Iran-backed group in southern Lebanon.

In a statement on Monday, the Israeli army said that "during an activity to locate weapons in southern Lebanon, (Israeli) troops identified several armed Hezbollah Radwan Force terrorists who were planning to fire an anti-tank missile", referring to the group's commando force.

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.