Israel says its warplanes have hit more than 100 Hezbollah rocket launchers and other “terrorist sites” including a weapons storage facility in southern Lebanon.
The Israel Defense Forces (IDF) said the launchers were ready to be fired against Israel. It was not immediately clear if there were any casualties.
Lebanon’s state-run National News Agency said Israel carried out at least 52 strikes in the south of the country on Thursday evening, and that Lebanon had also launched strikes on military sites in northern Israel.
Earlier, Hezbollah leader Hassan Nasrallah said deadly explosions earlier in the week “crossed all red lines”, accusing Israel of what he said represented a declaration of war.
Israel has not said it was behind the attacks – which saw pagers and walkie-talkies explode simultaneously across the country – on Tuesday and Wednesday, and which Lebanese authorities said killed 37 people and wounded 3,000.
But Defence Minister Yoav Gallant has said Israel is embarking on a “new phase of the war”, concentrating more of its efforts on the north.
The previously sporadic cross-border fighting escalated on 8 October 2023 – the day after the unprecedented attack on Israel by Hamas gunmen from Gaza – when Hezbollah fired at Israeli positions, in solidarity with the Palestinians.
Since then hundreds of people, most of them Hezbollah fighters, have been killed in the cross-border fighting, and tens of thousands have also been displaced on both sides of the border.
Hezbollah has said it is acting in support of the Palestinian armed group Hamas. Both are backed by Iran and proscribed as terrorist organisations by Israel, the UK and other countries.
In a statement late on Thursday, the IDF said its warplanes “struck approximately 100 launchers and additional terrorist infrastructure sites, consisting of approximately 1,000 barrels that were ready to be used in the immediate future to fire toward Israeli territory”.
“The IDF will continue to operate to degrade the Hezbollah terrorist organisation’s infrastructure and capabilities in order to defend the state of Israel”.
Lebanese security sources cited by Reuters news agency and the New York Times said the Israeli strikes were one of the most intense since the war in Gaza began in October last year.
The IDF also urged residents in northern Israel close to the Lebanese border to avoid large gatherings, guard their neighbourhoods and stay close to bomb shelters.
On Thursday morning, Hezbollah fighters in southern Lebanon fired two anti-tank missiles across the border, followed by drones.
The IDF said two Israeli soldiers were killed and a third seriously wounded.