Israeli strikes have killed at least 40 people in Gaza, health authorities said.
Most of them died in Gaza City where, despite evacuation orders from Israel, many residents are staying put because they have nowhere safe to go.
The Israeli military has stated to take full control of the ruined city, where about one million people are sheltering and has been intensifying its attacks, residents said.
It is part of Israel's plan to wipe out Palestinian militant group Hamas.
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"The explosions never stopped since yesterday," said Adel, a 60-year-old father-of-two who lives in Gaza City close to Beach refugee camp. He did not wish to give his full name for safety reasons.
"Many families left their homes and that is what the occupation wants. By these bombardments they are telling people 'You either leave your area or die there," he added.
Witnesses said that at least 15 houses in Beach camp had been hit by air strikes and the Israeli army had called the occupants of others telling them that strikes on their homes were imminent.
Medical sources said that 14 civilians were killed in a single strike on a house in the Al-Tuwam area, in the north of Gaza City.
Several deadly strikes hit targets in the south of the territory, where some of those fleeing the bombardment of the city have been heading.
Head of the Palestinian NGOs Network Amjad Al-Shawa, an agency that liaises with the United Nations and international aid groups, said that an estimated 10% of people in Gaza City had left since Israel announced its plan to take control of it a month ago.
Gaza crossing expanded to allow in more aid trucks - Israel
The Israeli army said that it had started expanding an area of southern Gaza it calls "Crossing 147" in order to increase the volume of aid entering a designated humanitarian zone.
This was in preparation to receive the population leaving the northern area, it said.
"It should be emphasised that, upon completion, the crossing's intake capacity will rise to 150 trucks per day - triple the current level, thereby enabling increased entry of aid, with an emphasis on food," the army said in a statement.
The UN and many foreign governments, including those of countries traditionally allied with Israel, have condemned the Gaza City evacuation order, called for a ceasefire, and sharply criticised conditions in the humanitarian zone.
Israel's military assault on Gaza has killed more than 64,000 people, mostly civilians, according to health authorities, caused a hunger crisis and wider humanitarian disaster, and reduced much of it to rubble.
The territory's health ministry said that at least 411 people, including 142 children, have died of malnutrition and starvation in the territory.
The war began after Hamas attacked southern Israel on 7 October 2023, killing 1,200 people, mostly civilians, and taking 251 hostage, according to Israeli tallies.
Elsewhere, Israeli police said that an attacker from a Palestinian area of the West Bank had been arrested after carrying out a stabbing attack on guests of a hotel at a kibbutz near Jerusalem.
Israel's ambulance service said that two people had been taken to hospital.