Israel and Hezbollah have exchanged heavy fire, with Israeli warplanes carrying out the most intense bombardment in almost a year of war across Lebanon's south and Hezbollah firing rockets deep into northern Israel.
The Israeli military said it struck around 290 targets on Saturday, including thousands of Hezbollah rocket launcher barrels, and said it would continue to strike targets of the Iran-backed movement.
In response, the militant group fired more than 100 rockets into northern Israel early on Sunday, with some landing near the city of Haifa.
Hezbollah deputy secretary-general Naim Qassem said that the group had entered a new phase of its battle with Israel which he described as an "open-ended battle of reckoning".
Schools closed, hospitals moved in Israel during conflict
Israel closed schools and restricted gatherings in many northern areas of the country and the Israeli-occupied Golan Heights early on Sunday.
Sirens sounded all night as multiple rockets and missiles were fired from Lebanon and Iraq, most of which were intercepted by Israeli aerial defence systems, the military said.
Several buildings were struck, including a house badly damaged near the Israeli city of Haifa. Rescue teams treated wounded but there were no reports of fatalities as residents had been instructed to stay near bomb shelters and safe rooms.
Israel's medical emergency service said at least four people suffered "shrapnel injuries" after the attack.
"Hundreds of thousands of people had to take refuge in bomb shelters at that time across northern Israel," military spokesperson Lieutenant Colonel Nadav Shoshani said.
Educational activities would not be permitted across northern Israel until at least Monday at 6pm local time, the military's Home Front Command said, affecting "hundreds of thousands of children" according to Mr Shoshani.
Hospitals in northern Israel have been instructed to transfer their operations to facilities with extra protection from rocket and missile fire, the health ministry said on Sunday.
IDF responds with strikes on Hezbollah rocket launchers
The military said it launched strikes on Hezbollah targets in southern Lebanon in response to the rocket fire.
Mr Shoshani said the military had hit a range of targets over the past day, mostly "rockets launchers and rocket launcher barrels".
Emergency crews in Kiryat Bialik clean up from damage caused by a rocket from Lebanon. (Reuters: Shir Torem)
The Israeli strikes were meant "to prevent a larger-scale attack", the military spokesperson told an online press briefing.
Israel has in recent days hit Iran-backed Hezbollah in Lebanon in ways it could not imagine, Prime Minister Benjamin Netanyahu said on Sunday.
"If Hezbollah has not understood the message, I promise you, it will understand the message," Mr Netanyahu said, according to a statement from his office.
Lebanon's health ministry said three people had been killed by Israeli strikes on Sunday in separate attacks.
It said the three people had been killed in three different villages in southern Lebanon.
Hezbollah also said on Sunday that one of its fighters had been killed, without specifying any details.
Islamic Resistance claims responsibility for drone attacks
Lebanon's health ministry said on Sunday that one person was killed and another wounded in an "Israeli strike" near the border.
Hezbollah said it targeted the Israeli Ramat David Airbase with dozens of missiles in response to "repeated Israeli attacks on Lebanon", the group posted on its Telegram channel early on Sunday.
The successive barrages of rocket attacks launched by Hezbollah at Ramat David are the deepest strikes it has claimed since hostilities began.
An official in the Islamic Resistance in Iraq, a grouping of Iran-backed armed factions, said they launched cruise missile and explosive drone attacks at Israel at dawn on Sunday as part of "a new phase in our support front" with Lebanon.
"The fighters of the Islamic Resistance of Iraq targeted on Sunday morning a strategic location in the occupied territories using drones," the coalition said in a statement on Telegram, referring to Israel.
Israel's air defence system fired to intercept the rockets. (AP: Baz Ratner)
It added the attack was carried out "in support of our people in Gaza".
Israel's military later said that it intercepted a "suspicious aerial target" launched from the east, and that no damage or injuries were reported.
At least seven killed in Gaza school strike
Civil defence rescuers in Gaza City said an Israeli strike on a school-turned-shelter on Sunday killed at least seven people
Civil defence agency spokesperson Mahmud Bassal reported "seven martyrs and a number of wounded, including serious cases, as a result of Israeli shelling of Kafr Qasim School" in the Al-Shati refugee camp.
He said hundreds of displaced Gazans were sheltering there.
Among those killed was Majed Saleh, the director of the Hamas-run Public Works and Housing ministry, medics added.
Palestinians inspect the damage to a school sheltering displaced people after it was hit by an Israeli strike. (Reuters: Dawoud Abu Alkas)
Six other Palestinians were killed in separate air strikes in central and southern parts of Gaza, the medics said.
They put the number of Palestinians killed in Israeli strikes so far on Sunday at 16.
The IDF said it was targeting Hamas militants operating from the school grounds, and that its forces had taken steps "to mitigate the risk of harm to uninvolved civilians" including by using "precise munitions" and surveillance.
It said the air force had "conducted a precise strike on Hamas terrorists in the northern Gaza Strip" who were "operating from a compound" at the school complex.
Gaza's health ministry also warned on Sunday that all services in all hospitals could halt in 10 days because of the shortages in essential spare parts and oil needed to operate the fuel-powered generators.
Beirut strike death toll rises again
Lebanon's health ministry said the number of people killed in an Israeli airstrike on Beirut last week has grown to 45.
In a statement it said search efforts at the site in the southern suburb of Dahiyeh were ongoing and some remains collected were yet to be identified.
Recovery work at the site in the southern Beirut suburb of Dahiyeh was ongoing on Sunday. (AP Photo: Bilal Hussein)
A local engineer at the site told AP news agency that rescuers were still looking for "about 15 bodies".
A crane has been brought in to assist with the recovery effort.
Friday's strike killed top Hezbollah commander Ibrahim Aqil and dozens of other members of the group.
Middle East 'on the brink of an imminent catastrophe', UN coordinator says
Israeli rescue forces appeared in the aftermath of the strikes. (AP: Gil Nechushtan)
The United Nations special coordinator for Lebanon warned of an "imminent catastrophe" in the Middle East on Sunday, saying a military solution was not the answer.
"With the region on the brink of an imminent catastrophe, it cannot be overstated enough: there is NO military solution that will make either side safer," special coordinator Jeanine Hennis-Plasschaert said in a statement on X.
With at least 84 people killed in Lebanon during the past week, the conflict toll in the country since October has surpassed 750 during the worst Israel-Hezbollah flare-up since the 2006 war.
The Hamas-run Gaza health ministry said on Sunday at least 41,431 Palestinians have been killed since October 7, with another 95,818 injured.
The US State Department urged Americans in Lebanon to leave the country while commercial options remain available. Jordan on Sunday urged its nationals to do the same.
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