The Lebanese group said its fighters had been fighting for nearly an hour with Israeli troops at a Lebanese border village, as incursions increased two weeks into Israel's invasion.
"During an attempt by an Israeli enemy infantry force to infiltrate the village of Al-Qawzah from the southern side at 13:15 (1015 GMT)" Hezbollah fighters "clashed with them using machine guns and the clashes are still ongoing," the group said in a statement.
At around 9:30, Hezbollah launched a "rocket salvo operation" on the Tira al-Karmel base in southern Haifa, Al Manar TV reported citing Hezbollah's media office.
The galvanised efforts to deter the invasion come as Israeli Prime Minister Benjamin Netanyahu on Sunday called on the UN chief to move UN peacekeepers deployed in southern Lebanon out of "harm's way".
Netanyahu's appeal to UN chief Antonio Guterres comes a day after the United Nations Interim Force in Lebanon, known as UNIFIL, refused to withdraw from the border area despite five of its members being wounded in Israeli fire in recent days.
The withdrawal would have included its 29 positions in Lebanon's south.
Hezbollah also fired a salvo of rockets at Israeli forces in the Lebanese town of Maroun al-Ras and artillery shells at a gathering of troops in the Zabadin barracks in the Israel-occupied Shebaa Farms.
Inside Israel, Hezbollah fighters targeted and directly hit the Zarit barracks with rockets and a Burkan missile and targeted a gathering of Israeli enemy forces in the Shomera settlement with a rocket salvo.
They later launched a barrage of rockets at invading forces in the Lebanese town of Khallet Warda in the vicinity of Aita Al-Shaab.
Hezbollah also detonated an explosive device as the Israeli troops tried to invade the Tel al-Madwar area in the town of Ramyeh, killing and wounding some of them.
The Lebanese group also said it targeted two Israeli army sites off the southern Lebanese border.
Hezbollah also launched a guided missile targeting Israeli forces and an armored vehicle in the vicinity of the Ramia site while also targeting troops deployed in the Tal Shaar site, noting that several were killed and wounded in both attacks.
Overnight, the Lebanese resistance group bombed Israeli army positions with a rocket salvo in Mailiya in the western Galilee of northern Israel and targeted Israeli troops deployed in the Manara settlement located almost directly on the Lebanon-Israel border.
Concluding its list of operations this morning, Hezbollah reiterated that it was ready to defend Lebanon and would not hesitate to deter the "arrogance and aggression" of the invading Israeli army in the south.
It added that its operations were "in support of Palestinians in Gaza... and in defence of the Lebanese people."
At least 25 Israeli soldiers were injured, some in serious condition, due to ongoing fighting in southern Lebanon, according to the Israeli website Walla.
The wounded soldiers were transferred to hospitals across the country, with several in critical condition.
An Israeli army spokesperson reported earlier that a reservist from Battalion 9220 was seriously injured in the battle in southern Lebanon. In another incident, a combat officer from the same battalion was also seriously wounded.
Hezbollah accused Israeli forces of using internationally banned cluster bombs in strikes on the area between the towns of Hanin and Tayri in southern Lebanon.
"The enemy's army targeted the towns of Hanin and Tayri with missiles carrying cluster munitions, which are prohibited under international law," Hezbollah said in a statement.
The Lebanese resistance group expressed no surprise at what they described as a "new barbaric crime" added to a series of ongoing Israeli crimes against both the Lebanese and Palestinian people.
Meanwhile, the Lebanese Red Cross said its paramedics were hit by an Israeli strike on Sunday while attending the site of an earlier attack in the south, leaving them lightly injured.
"Following the air strike on a house in Sirbin... Lebanese Red Cross ambulance teams were dispatched to the scene in coordination with" UN peacekeepers, the Red Cross said in a statement.
"As the team was searching for casualties to rescue, the house was hit for a second time resulting in concussions to the volunteers and damage to the two ambulances," it said, adding the paramedics had sustained light injuries.
Israel expanded its aerial bombardment in Lebanon, hitting areas in and outside the traditional Hezbollah bastion. Israeli warplanes hit a 100-year-old mosque in a village near the border on Sunday, Lebanon's official National News Agency (NNA) said.
On Saturday a marketplace in the southern city of Nabatiyeh was targeted.
There were also deadly strikes on a Shiite Muslim village in a mostly Christian mountain area and another in north Lebanon, the health ministry said.
AFP footage from the northern Deir Billa area showed rescuers and villagers digging through debris left by a strike with their bare hands.The Lebanese group said its fighters had been fighting for nearly an hour with Israeli troops at a Lebanese border village, as incursions increased two weeks into Israel's invasion.
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