Attacks on the Lebanese towns of Suane and Ard Chit left some injured, while a woman was killed in Israel.
At least four people, including two children, were killed in an Israeli airstrike in southern Lebanon, the Lebanese Civil Defense Authority said.
At least 11 people were injured in attacks on the towns of Suane and Ardchit. A woman and her two children were killed in Suaneh, and a Hezbollah fighter named Hassan Ali Nazim was killed by the group in Aadchit.
Wednesday's attack targeted several towns in southern Lebanon, including areas in Nabatiyeh governorate.
The attack occurred deep within Lebanese territory, raising fears of another escalation.
The Israeli military announced on Wednesday that it had launched a “massive airstrike” into Lebanon.
The attack came after a barrage of rockets from southern Lebanon hit a military base in Safed in northern Israel, killing one person and wounding several others, Al Jazeera's Zeina Khodor reported.
“This is said to be the biggest escalation in the ongoing conflict between the Israeli military and the Lebanese militant group Hezbollah,” Hodor reported from Beirut. However, she added that the escalation remains “controlled” and both sides are “sending a message” to the other with their attacks.
The “battlefield” had previously been along the 120-kilometer (75-mile) border, about 4 kilometers to 5 kilometers (2.5 miles to 3 miles) deep on both sides, but this time Israel “attacked even deeper,” she said. Told.
In Israel, a government spokesperson announced that an Israeli woman was killed by a rocket fired from Lebanon. A spokesman said a barrage of fire hit a military base on Wednesday, injuring several people.
Military and political analyst Elijah Maginer said Israel was targeting “very sensitive” villages such as Nabatiyeh.
“We are attacking villages that have not been attacked before,” Maginer told Al Jazeera.
“So this is an escalation and I think Hezbollah will respond with the same intensity of bombing without escalating the war too much,” he said.
This means that Hezbollah is likely to respect “more or less the limits of engagement” and not choose an all-out war that is also not in the interests of the Israelis, Maginer added.
Hezbollah's top commander, Hassan Nasrallah, said on Tuesday that the militant group's cross-border shelling of Israel will only end if Israel's “aggression” into the Gaza Strip stops.
The group has engaged in gun battles with Israeli forces across the border in southern Lebanon in support of its Palestinian ally Hamas. Hamas launched a cross-border attack on Israel from the Gaza Strip on October 7, followed by heavy shelling by Israeli forces from the Gaza Strip into Gaza. Land, air, sea.
There are growing fears of another full-scale conflict between Israel and Hezbollah, with tens of thousands of people displaced on both sides of the border and regional tensions rising.
Cross-border attacks have killed at least 200 people in Lebanon, including more than 170 Hezbollah fighters, as well as 10 Israeli soldiers and five Israeli civilians.