Israel's military said on Friday that its forces carried out overnight strikes on targets across southern Lebanon, while Hezbollah reported heavy fighting in the area.
The latest clashes came as planned talks between the United States and Iran in Switzerland, aimed at finding a lasting solution to the Iran conflict, were postponed.
Israel's presence in southern Lebanon and its continued military operations against the Iran-backed Shiite group Hezbollah have been among the key issues under discussion.
Israeli officials have argued that the military must maintain control of the area and continue operations against Hezbollah, accusing the group of launching attacks into northern Israel.
The delay in the talks followed a report by pan-Arab satellite channel Al-Mayadeen, which is politically aligned with Hezbollah, saying that Iran had postponed sending its delegation to Switzerland because of Israel's ongoing military campaign in Lebanon.