Hezbollah launched over 50 projectiles at IDF soldiers in southern Lebanon overnight between Friday and Saturday in a "blatant ceasefire violation," the IDF said.
One soldier was killed in the attacks, and at least 13 were injured only hours after the ceasefire went into effect on Friday.
The military responded to the attacks with strikes on several Hezbollah terrorists and terror infrastructure sites in southern Lebanon, the military added, including rocket launch positions, weapons storage facilities, and command centers.
The military noted that it remains committed to the ceasefire, emphasizing that it will act to "remove any threat posed to the State of Israel and IDF soldiers."
Prime Minister Benjamin Netanyahu and Defense Minister Israel Katz later ordered the IDF to hold its fire on Saturday, shortly after Iranian officials closed the Strait of Hormuz, which regime-aligned media said was due to the strikes.
Also on Saturday, US Vice President JD Vance delayed his travels to Switzerland for US-Iran talks.
Earlier on Saturday, Hezbollah stated that it had targeted IDF soldiers in southern Lebanon, saying that it would "not hesitate to confront any attempt by Israel to seize land in Lebanon" despite its "commitment to the ceasefire," according to Reuters.
A senior Hezbollah official told Reuters that the terrorist organization will not allow Israel "freedom of movement" in what it described as "occupied Lebanese territory."
“In light of the claims and lies that the Israeli enemy continues to promote regarding alleged violations of the ceasefire agreement by Hezbollah… Hezbollah affirms that these claims are completely baseless,” a statement attributed to Hezbollah reads.
“They fall within the framework of the enemy’s persistent attempts to mislead public opinion and are part of its clear and blatant effort to sabotage the agreement between the Islamic Republic of Iran and the United States of America.”
Lebanon accuses Israel of 'brutal attacks'
The Lebanese Army said on Saturday that Israel's "brutal attacks" in Lebanon are aimed at preventing the return of stability to the region.
"It has become clear that the continuation of these Israeli brutal attacks aims to obstruct any solution that would allow the restoration of stability in Lebanon," the Lebanese Army said on X/Twitter.
The post further accused the IDF of carrying out attacks across Lebanon earlier on Saturday, causing casualties and extensive property damage, as well as the death of a Lebanese soldier.
Lebanese media reported that at least 20 people were killed after Israeli warplanes and drones hit multiple locations in southern Lebanon, according to Reuters.
The Lebanese Health Ministry announced on Saturday that 83 people died in Friday's strikes. Later, Al Jazeera quoted Lebanese authorities as saying that over 4,000 people have died in Israeli attacks since March.
Iran's General Staff threatened to fire missiles at Israel if its "aggression against Lebanon continues," Iranian officials told Lebanese outlet U News.
Source to 'Post': Ceasefire reached with Hezbollah
An Israeli source confirmed to The Jerusalem Post on Friday that Israel and Hezbollah had agreed to a ceasefire, with a senior United States official telling Reuters that the agreement would begin at 4 p.m. the same day.
The official added that American and Qatari negotiators achieved the deal with help from Iran.
An IDF spokesperson said at a press conference on Friday afternoon that the military will continue operating in Lebanon unless it receives different directives.
"Recent events have made one thing clear: IDF soldiers must stand between Hezbollah and Israeli civilians," said the spokesperson.
Maariv and Tobias Holcman contributed to this report.