Deadly fighting raged on in Gaza on Monday after Israel warned that, unless Hamas frees all hostages, it will push on with its offensive during the Muslim holy month of Ramadan, including in the far-southern Rafah area, reports AFP.

Global concern has mounted over the fate of 1.4 million Palestinians who have been forced into Rafah near the Egyptian border, enduring bombardment and dire food shortages as they live in crowded makeshift shelters and tents.

War cabinet member Benny Gantz warned on Sunday that the Israeli army is ready to push deeper into Rafah during Ramadan which, based on the lunar calendar, starts around March 10.

"The world must know, and Hamas leaders must know: if by Ramadan the hostages are not home, the fighting will continue everywhere to include the Rafah area," said Gantz, a former military chief of staff.

"We will do so in a coordinated manner, facilitating the evacuation of civilians in dialogue with American and Egyptian partners and to minimise the civilian casualties as much as possible."

He added: "Hamas has a choice. They can surrender, release the hostages, and the civilians of Gaza can celebrate the feast of Ramadan."

Israel has so far failed to specify where Palestinians could flee after more than four months of devastating war have flattened vast swathes of the Gaza Strip.

Egypt has stressed it does not want Gazans to flee into its Sinai territory, arguing that this would facilitate an effort to empty Gaza of its Palestinian population, an objective Israel denies.

Satellite images show that Egypt has started erecting a walled enclosure parallel to the Gaza border, in an apparent precautionary move in case of a mass refugee flight.

- 'Total victory' -

International pressure has grown on Israel to halt the war in the besieged coastal territory, but Prime Minister Benjamin Netanyahu insisted the army will destroy Hamas and bring home the remaining captives.

Speaking on Sunday, the right-wing premier again vowed "total victory" over Hamas, even as he has faced increasing pressure inside Israel from resurgent anti-government protests and desperate relatives of hostages.

The war started when Hamas launched its unprecedented attack of October 7 that left about 1,160 people dead in southern Israel, mostly civilians, according to an AFP tally of official Israeli figures.

The Hamas, considered a "terrorist" group by the United States, EU and other governments, also took about 250 hostages, 130 of whom remain in Gaza, including 30 presumed dead, according to Israel.

Israel's massive retaliatory campaign has killed at least 29,092 people, mostly women and children, according to the latest count by the territory's health ministry.

The army released footage on Monday from inside war-torn Gaza of Israeli combat troops with canine units engaged in fierce house-to-house battles and tanks churning through the sand amid charred remains of bombed-out buildings.

The spiralling humanitarian crisis in Gaza has forced some Palestinians to grind animal feed into flour.

"My children are starving, they wake up crying from hunger," a northern Gaza woman told AFP. "Where do I get food for them?"

The UN agency for Palestinian refugees, which has been bitterly at odds with Israel, said nearly three quarters of Gazans are drinking contaminated water and warned that "the speed of deterioration in Gaza is unprecedented".

Bd-pratidin English/Lutful Hoque