"The situation is very catastrophic because the electricity will abruptly go off within 24 hours," one doctor warned.

Israeli officials have signaled they want the United Nations to remain the key avenue for humanitarian deliveries in Gaza, the deputy head of the World Food Programme said on Friday, noting the work of a controversial U.

Nasser hospital in Khan Younis has a critical shortage of fuel and had to stop admitting patients after Israeli tanks advanced nearby on Thursday.

The European Union and Israel have agreed on a deal to allow more food, fuel and other vital aid into the starvation-gripped Gaza Strip, with an E.U. presence at border crossings, European and Israeli officials said Thursday.

The attack struck near a facility run by an American aid organization as negotiators from Hamas and Israel wrangle over a potential new cease-fire agreement.

The European Union is seeking ways to put pressure on Israel to improve the humanitarian situation in Gaza, its top diplomat said, as member states weighed action against Israel over what they see as potential human rights violations.

Medical workers are forced to make life-or-death decisions for patients whose injuries would be treatable if they had the supplies, according to a new report.

The fighting in Gaza has shown no sign of slowing as Prime Minister Benjamin Netanyahu meets with President Donald Trump in Washington this week to work on a U.S.-led ceasefire plan.