Israeli forces were continuing "to fight in all parts of the Gaza Strip"

In Gaza lack of health services had created a deadly cycle that threatens over 1.1 million children

On Saturday Israel bombed Gaza as the United Nations warned the Palestinian territory has become "uninhabitable" after three months of fighting that threatens to engulf the wider region.

Under Israeli strikes early Saturday on Gaza's southern city of Rafah, where hundreds of thousands of people have sought shelter from the fighting.

Abu Mohammed, 60, who fled to Rafah from the central Bureij refugee camp, told that, Gaza's future was "dark and gloomy and very difficult".

With much of the territory already reduced to rubble, UN humanitarian chief Martin Griffiths said Friday that "Gaza has simply become uninhabitable".

The UN's children's agency warned that clashes, malnutrition and a lack of health services had created "a deadly cycle that threatens over 1.1 million children" in Gaza

Israeli forces were continuing "to fight in all parts of the Gaza Strip, in the north, centre and south", military spokesman Daniel Hagari said late Friday.

Hagari said Israeli forces were maintaining a "very high state of readiness" near the border with Lebanon following the killing of a top Hamas commander in a strike in Beirut.

Israel has not claimed responsibility for the strike, but a US defence official told  that Israel carried it out.

The militants also took around 250 hostages, 132 of whom remain in captivity, according to Israel, including at least 24 believed to have been killed.

In response, Israel has launched a relentless bombardment and ground invasion that have killed at least 22,600 people, most of them women and children, according to the Gaza health ministry.