Israeli tanks have pulled out of some Gaza City districts while remaining in others, residents say, ahead of a planned troop reduction in the war, but fighting has raged elsewhere in the Palestinian enclave along with intense bombardment.
Israel says the war in Gaza, which has reduced much of the territory to rubble, killing thousands and plunging its 2.3 million people into a humanitarian disaster, has many months to go.
But Israel has signalled a coming shift in tactics, with an official saying on Monday the military would draw down forces inside Gaza and shift to a months-long phase of more localised "mopping up" operations.
The official said the troop reduction would allow some reservists to return to civilian life, shoring up Israel's war-battered economy, and free up units in case of a wider conflict in the north with Lebanon's Iran-backed Hezbollah.
Artillery fire between Hezbollah and Israel has rattled the border since the start of the Gaza conflict and any new escalation carries risks for a wider regional war.
Iran-backed fighters in Yemen have meanwhile attacked Red Sea shipping.
The war was triggered by a surprise Hamas attack on Israeli towns on October 7 that Israel says killed 1200 people.
Palestinian health authorities in Hamas-run Gaza say Israel's offensive there has killed more than 21,800 people.
The scale of suffering in Gaza, where the bombardment has driven almost all inhabitants from their homes, has led Israel's Western allies, including the US, to urge it to scale down its offensive.
Residents of Sheikh Radwan district in Gaza City, in the northern part of the enclave that Israel's offensive focused on first, said tanks had withdrawn after what they described as the most intense 10 days of warfare since the conflict began.
"The tanks were very near," said Nasser, a father of seven living in Sheikh Radwan who did not give his family name for fear of Israeli reprisals.
"We could see them outside the houses.
"We couldn't get out to fill water."
Tanks also pulled out of Gaza City's al-Mina district and parts of Tel al-Hawa district, while retaining some positions in the suburb controlling the enclave's main coastal road, residents said.
However, tanks remained in other parts of northern Gaza and health officials said some people trying to return to their homes in a southern district of Gaza City had been killed by Israeli fire on Sunday.
Fighting in central parts of the enclave continued unabated on Monday, residents there said, with tanks pushing into al-Bureij and air strikes targeting al-Nusseirat, al-Maghazi and the southern city of Khan Younis.
Hamas showed its continued ability to target Israel after more than 12 weeks of the war, launching a barrage of rocket fire at Tel Aviv overnight.
Israel's move to a new stage in the conflict comes after its initial bombardment and a ground invasion that began on October 27.
Air and artillery strikes have continued to pound the entire enclave during that time, leaving much of it in ruins.
With Israeli tanks and troops having overrun most of northern Gaza, while still pushing into the centre and parts of the south, Hamas is responding with guerrilla-style ambushes from tunnels and bunkers in the enclave's narrow streets.
Hamas seized 240 hostages on October 7 and Israel believes 129 are still held in Gaza after some were released during a brief truce and others killed during air strikes and rescue or escape attempts.
Qatar and Egypt are seeking to negotiate a new truce and hostage deal.
Countries around the region fear the war could spill over.
Israel and Hezbollah last fought a major war in Lebanon in 2006 and their fighting since October 7 has been the most intense since then.
"The situation on the Lebanese front will not be allowed to continue," the Israeli official said.
"This coming six-month period is a critical moment."
Israel has also struck sites in Syria, while Iran-backed militia groups there and in Iraq have also targeted Israel's US allies.
