The Israeli military said a ballistic missile launched from Iran fell in Lebanese territory on Tuesday, as the Middle East war dragged into its fourth week.

"Following an assessment and based on the data available to the IDF (Israeli army), alongside the launches carried out toward the State of Israel earlier today, a ballistic missile fired by the Iranian terror regime fell in Beirut," a military statement said, referring to the missile fragments that landed in various areas of Keserwan and Metn earlier in the day.

Hezbollah on Tuesday called the decision by Lebanon's foreign ministry to expel the newly appointed Iranian ambassador a "sin", and demanded the authorities "immediately reverse" the move.

Israel should "refrain" from sending in forces to take control of a zone in south Lebanon, France's foreign minister told AFP on Tuesday, saying such a move would have "major humanitarian consequences".

"We urge the Israeli authorities to refrain from such ground operations, which would have major humanitarian consequences and would exacerbate the country's already dire situation," Jean-Noel Barrot said.

Explosions rocked several areas north of Beirut that have so far been spared in the ongoing Israeli war, according to residents and local media, with a military official saying the blasts likely came from an intercepted Iranian missile.

Footage broadcast by the local LBCI channel in the coastal town of Sahel Alma showed a building with shattered windows and shrapnel piercing one of its walls, and a crack in a small wall beside it.

Lebanon's foreign ministry said on Tuesday it had withdrawn its approval of the Iranian ambassador's accreditation, giving him until Sunday to leave the country.

The ministry said in a statement that it had summoned the Iranian charge d'affaires in Lebanon and informed him of "the Lebanese state's decision to withdraw approval of the accreditation of the appointed Iranian ambassador, Mohammad Reza Sheibani, and declare him persona non grata, demanding that he leave Lebanese territory no later than next Sunday".

At an archaeological site in southern Lebanon's Tyre, small signs bearing a blue and white emblem provide a symbolic shield, meant to protect the ancient ruins from bombardment.

One of the oldest cities on the Mediterranean coast, Tyre is located around 20 kilometers from the Israeli border, and has been the target of several strikes since Lebanon was drawn into the Middle East war by Hezbollah's March 2 rocket attack on Israel.

Israel said on Tuesday that its military would take control of south Lebanon up to the Litani River, around 30 kilometers (20 miles) from the border, as deadly strikes pounded the country.

In the latest unprecedented step by Lebanese authorities since a new war erupted between Israel and Hezbollah, Lebanon's foreign ministry declared the Iranian ambassador persona non grata, giving him until Sunday to leave the country.

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.

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.

Iran and Israel traded strikes on Tuesday, as the Middle East war showed no sign of de-escalation despite U.S. President Donald Trump signaling "very good talks" to end the three-week conflict.

The war, sparked by U.S.-Israel attacks on Iran that killed its supreme leader, has upended global energy markets, roiled the world economy, and spiraled throughout the region -- even dragging in safe-haven Gulf nations.