"The IAF (air force) conducted an extensive aerial operation and struck over 120 terror targets in southern Lebanon within an hour," the military said in a statement, according to AFP.
The Israeli military further said that the targets belonged to the group's elite Radwan forces and other units.
The attack on Lebanon comes on the anniversary of the October 7 attacks last year, when Hamas launched an unprecedented strike on Israel.
Hezbollah also said that it targeted areas north of Israeli city of Haifa, a day after an attack on the northern Israeli city wounded over 10 people, according to Al Jazeera.
Meanwhile, air raid sirens echoed across central Israel, including Tel Aviv, after surface-to-surface missiles were fired from Yemen. Israel did not mention who fired the missile, but Iran-backed Houthis - A Shia militant group in Yemen - have over the past year attacked Israel several times in solidarity with Palestinians in Gaza.
In a post on X, the IDF said, "As families grieve their loved ones on the one-year anniversary of the October 7 massacre, they are still forced to run for their lives in order to seek shelter from rockets. This is the reason we keep fighting."
Several events have been organised across Israel to remember those who died in the attacks carried out by Hamas.