Lebanon's health ministry reported that two people were killed on Monday in an Israeli strike on the south of the country, where Hezbollah has been exchanging near-daily fire with Israel since the onset of the Gaza war in October.

Tensions have heightened significantly since last week as Iran and Tehran-backed groups, including Hezbollah, promised retaliation for the killing of Hamas's political leader in Tehran and Israel's assassination of Hezbollah's military chief in Beirut.

"The enemy raid that took place near the (Mais Al-Jabal) town's cemetery killed two people," the health ministry said in a statement.

"One of the two martyrs who fell in the Mais Al-Jabal raid this morning was a Risala Scouts paramedic," reported Lebanon's state-run National News Agency.

Ali Abbas, a rescue worker from the Risala Scouts, which is affiliated with Hezbollah ally the Amal movement, told AFP that the paramedic had traveled by motorcycle with another person to inspect the site of an earlier strike.

He went "to see if there were civilians or people (in the area)... and the second strike happened immediately," Abbas said.

Mais al-Jabal, a frontline village less than two kilometers from the border with Israel, has experienced heavy bombardment since the cross-border clashes began, forcing most residents to flee.

Early on Monday, Hezbollah announced that it had targeted military sites in northern Israel with "explosive-laden drones" in response to Israeli "attacks and assassinations" in southern Lebanon.

The Israeli military stated that "numerous suspicious aerial targets were identified crossing from Lebanon" into northern Israel, causing a fire and leaving an officer and a soldier "moderately injured."

The cross-border violence since October has resulted in at least 549 deaths in Lebanon, mostly fighters but also including at least 116 civilians, according to an AFP tally.

On the Israeli side, including the annexed Golan Heights, 22 soldiers and 25 civilians have been killed, according to army figures.