Exchange of fire continues in southern Lebanon at a time when Iran and its allies have promised retaliation for Israel's assassinations of a Hamas leader and Hezbollah's military chief.

The Health Ministry said that "two people were killed in an enemy attack" on the village of al-Jabal on the border with Israel.

The official National News Agency (ANI) identified one of the two dead as "a rescue worker from the al-Risala organisation" of the Amal movement, allied to Hezbollah.

Al-Jabal, less than two kilometres from the border with Israel, has been heavily shelled and abandoned by its inhabitants since the start of the war nearly ten months ago.

Earlier in the night, the ministry reported that two more people had been killed in Hula in the south of the country as a result of "hostile Israeli aggression".

Since the start of the war in Gaza, Hezbollah has opened a "support front" for the Palestinian Hamas in southern Lebanon, while exchanging daily fire with Israel.

Earlier on Monday, Hezbollah announced that it had used explosive-laden drones to target military sites in northern Israel.

The Israeli army reported that two soldiers were wounded in an airstrike by Lebanon in the Upper Galilee.

At least 549 people, mostly Hezbollah fighters, have been killed by Israeli strikes in Lebanon since October.

In Israel and the occupied Golan Heights, 22 Israeli soldiers and 25 civilians have been killed, according to officials.