Five municipal workers died "during an Israeli bombing" of a garage in Gaza City, said Mahmud Basal, spokesman for the civil defence agency in the Palestinian territory.
In southern Gaza, AFPTV captured an overnight Israeli strike on a residential district of Khan Yunis city. A ball of fire and sparks flared, followed by grey smoke before residents inspected damage in the dusty darkness.
Injuries have been reported due to Israeli shelling targeting the vicinity of tents housing displaced people west of Rafah, Al Jazeera reported.
Israeli attacks across Gaza have killed at least 21 people since dawn, according to medical sources.
Just before midnight Thursday, Israel's army said it had "intercepted a suspicious aerial target that crossed from Lebanon".
Early Friday, Lebanese official media reported fresh Israeli strikes in the country's south.
This came after Lebanon's Hezbollah resistance movement said it fired dozens of rockets at an Israeli barracks in northern Israel on Thursday in retaliation for a deadly air strike on south Lebanon.
One of the group's members was killed in that strike.
Hezbollah claimed several other attacks on Thursday.
The Israeli army said its jets had struck Hezbollah sites and had fired artillery "to remove threats in multiple areas in southern Lebanon".
Experts are divided on the prospect of a wider war, almost nine months into Israel's brutal war on Gaza.
Exchanges between Hezbollah and Israel have escalated in recent weeks and the Israeli occupaion army said Tuesday that plans for an offensive in Lebanon "were approved and validated".
Hezbollah chief Hassan Nasrallah said "no place" in Israel would "be spared our rockets" in a war, and also threatened nearby European Union member Cyprus.
The United States has appealed for de-escalation.
Israeli soldiers killed
The war has destroyed much of Gaza's infrastructure and left residents short of food, fuel and other essentials.
On June 16 the army said it would implement a daily "tactical pause of military activity" in a southern Gaza corridor to facilitate aid delivery.
But on Friday Richard Peeperkorn, of the World Health Organization, said "we did not see an impact on the humanitarian supplies coming in".
Israel's army on Friday identified two more soldiers killed during fighting in the territory, bringing to more than 310 the military toll since ground operations began.
The Gaza war's regional fallout has also impacted Yemen, whose Houthi rebels have for months attacked ships on vital trade routes surrounding the Arabian Peninsula country.
The Houthis and Hezbollah say they are acting in response to Israel's mass killing of the Palestinians.
The United States on Thursday said its forces had destroyed several Houthi drones, both sea-based and aerial.
US officials say a deal to curb fighting in Gaza would by extension help resolve the Hezbollah-Israel violence, but mediation efforts have not produced a deal.
Israeli Prime Minister Benjamin Netanyahu, who is on trial for corruption charges he denies, faces regular street protests accusing him of prolonging the war.
On Thursday night near his Jerusalem residence, some protesters painted their hands red, symbolising blood.
'Vexing' comments
In a statement on Thursday Netanyahu said he was "prepared to suffer personal attacks provided that Israel receives the ammunition from the US that it needs in the war for its existence".
This came as an apparent doubling down after a video statement this week in which he accused Washington of "withholding weapons and ammunitions to Israel".
The White House on Thursday described his comments as "vexing" and "disappointing". Except for one shipment, "there are no other pauses. None," press secretary Karine Jean-Pierre said.
Several weeks ago the administration paused delivery of a shipment of 2,000-pound (907 kilogram) bombs.
The United States provides Israel with $3 billion in annual military aid, but US official have been increasingly critical of the conduct of the war, including the rising civilian death toll.
The war has revived a global push for Palestinians to be given a state of their own.
Armenia on Friday declared its recognition of "the State of Palestine", prompting Israel's foreign ministry to call in Armenia's ambassador for "a severe reprimand."
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