Israeli tanks pushed into northern parts of the Khan Younis area, in the southern Gaza Strip, on Wednesday, and Palestinian medics said Israeli airstrikes had killed at least 47 people across the enclave.

The latest strikes came as Hamas said it had information that Israel intended to carry out a hostage rescue operation similar to one conducted in Gaza's Nuseirat camp in June, and it threatened to "neutralize" the captives if such an operation took place, according to an internal statement seen by Reuters on Wednesday.

In the internal statement dated Nov. 22, Hamas told its operatives not to consider any repercussions of following the instructions and said Israel was responsible for the fate of the hostages. It did not say when any Israeli operation was expected to take place.

Meanwhile, residents said tanks advanced one day after the Israeli military issued new evacuation orders, saying there had been rocket launches from the area.

With shells falling near residential areas, families left their homes and headed westward toward the humanitarian-designated area of Al-Mawasi nearby. Palestinian and United Nations officials say there are no safe areas left in Gaza and that most of its 2.3 million people have been displaced multiple times.

Later on Wednesday, an Israeli airstrike at a tent encampment in Al-Mawasi killed at least 17 people and wounded several others, medics said. The Civil Emergency Service said the attack set several tents housing displaced families ablaze.

Another Israeli airstrike hit three houses in Gaza City, killing at least 10 people and wounding many others, the territory's emergency service said. Many victims were still trapped under the rubble with rescue operations underway.

Medics said 11 people, including six children and one medic, were killed in three airstrikes on areas in central Gaza. Five of the dead had been lined up outside a bakery, they said.

A further nine Palestinians were killed by tank fire in Rafah, near the border with Egypt, medics said. Israel's military did not immediately comment on the medics' reports.

Israeli forces fired on the Kamal Adwan Hospital in Beit Lahiya in northern Gaza for the fifth successive day, hospital director Hussam Abu Safiya said, adding that three of his medical staff had been wounded, one critically, on Tuesday night.

"Drones are dropping bombs filled with shrapnel that injure anyone that dares to move," Abu Safiya said. "This situation is extremely urgent."

'Frantic, lost and scared'

Residents in three towns — Jabalia, Beit Lahiya and Beit Hanoun — said Israeli forces had blown up dozens of houses.

Residents ordered to evacuate Beit Lahiya on Wednesday said they were facing constant bombardment by the Israeli military.

WATCH | 'Where are we supposed to go?'

Hundreds of Palestinians flee Beit Lahiya after Israeli evacuation orders, bombardment

Droves of Palestinians reached central Gaza on Wednesday after being ordered to evacuate the northern Gaza town of Beit Lahiya. Palestinians accuse Israel's army of trying to drive them out of the northern edge of the enclave to create a buffer zone while the Israeli army denies this, saying it has returned to prevent Hamas fighters from regrouping.

"Our young children are frantic, lost and scared," Umm Al-Abd Al-Barawi told CBC News from central Gaza, where hundreds of residents were fleeing toward the south. "We left ... while the tanks are shooting at us.. Where are we supposed to go?"

Palestinians say Israel's army is trying to drive people out of the northern edge of Gaza with forced evacuations and bombardments to create a buffer zone. The Israeli army denies this and says it has returned to prevent Hamas fighters from regrouping in an area where it had previously cleared them out.

Israel launched its campaign in the densely populated enclave after Hamas-led fighters attacked Israeli communities across the border on Oct. 7, 2023, killing some 1,200 people and taking over 250 hostages, according to Israeli tallies.

Israel's military campaign has since killed more than 44,400 Palestinians, injured many others and reduced much of the enclave to rubble.

Israel agreed to a ceasefire with the Lebanese armed group Hezbollah last week that halted fighting in a conflict that has unfolded in Lebanon in parallel with the war in Gaza.

But the Gaza war itself has ground on with only a single ceasefire more than a year ago lasting for a week.