Lebanon said Israeli strikes killed 33 people across the country on Tuesday, among them many who had been displaced by the intensified conflict.
The attacks targeted several areas in the country, including the south, the vicinity of the capital Beirut and the north.
The health ministry said a strike on a town in the Chouf region south of Beirut killed at least 15 people, revising a previous toll upwards from 12.
"The Israeli raid on Joun in the Chouf district resulted in the death of 15 martyrs, including eight women and four children," it said.
Twelve others were wounded in the strike, the ministry added.
The official National News Agency (NNA) said the building had housed displaced people fleeing bombardment by Israel in its war against Hezbollah.
The health ministry said a strike a few kilometres further north in the mountainous Aley region east of the capital killed eight people.
A security source told AFP the attack had hit a house where people displaced in the war had taken refuge.
The ministry also reported one dead in an Israeli strike in the Tyre area in south Lebanon.
Elsewhere in the south of the country, the ministry reported strikes on the towns of Tefahta and Roumin killed seven people.
Attacks on the Hermel region in the Bekaa Valley in the east of the country bordering Syria killed another two people.
Nabatiyeh, the largest city in the south, again came under attack. Last month, Israeli strikes razed its historic marketplace and killed the mayor.
Hezbollah, meanwhile, said it fired missiles at an air base near Tel Aviv, following a wave of Israeli air strikes on the group's south Beirut bastion.
Israel reported two people killed in the northern town of Nahariya by rocket fire from Lebanon.
Since September 23, Israel has dramatically stepped up its bombing campaign in Lebanon, mainly targeting Beirut and in the east and south of the country. On September 30, Israeli troops invaded the country.
On Tuesday morning Israel launched more than a dozen air strikes on south Beirut, state media said, shortly after its military warned residents of four districts to evacuate.
Israel's military said it had hit "Hezbollah terrorist targets" in south Beirut including "command centres, weapons production sites, and additional Hezbollah terrorist infrastructure".
Witnesses told AFP they heard gunfire in the area ahead of the strikes - warning shots by residents for people to leave following the evacuation call.
The Lebanon war came after nearly a year of cross-border exchanges of fire, launched by Hezbollah in support of Hamas following its the launch of Israel's war on the Gaza Strip on October 7 last year, which has killed over 43,600 Palestinians.
With little sign of an end to the conflict, UN peacekeeping chief Jean-Pierre Lacroix met Prime Minister Najib Mikati in Beirut on Tuesday as part of a visit aimed at boosting calls for a ceasefire.
More than 3,300 people have been killed in Lebanon since the violence began last year, according to the health ministry, the majority of them since late September.