An Israeli air strike early on Sunday has incapacitated the last fully functioning hospital in Gaza City as the military expands and intensifies its campaign across the territory.

A new wave of Israeli strikes across Gaza kills more than 20 people, including an attack on the last major hospital providing critical healthcare in the north.

The pre-dawn strike hit Al-Ahli Hospital in Gaza City, after Israel issued an evacuation warning, according to Gaza's ministry of health. One patient died during the evacuation because medical staff were unable to provide urgent care, it said.