LONDON, United Kingdom (AFP) — The foreign ministers of 10 nations on Tuesday expressed “serious concerns” about a “renewed deterioration of the humanitarian situation” in Gaza, saying the situation was “catastrophic”.

The warning came a day after United States (US) President Donald Trump warned Palestinian militant group Hamas there would be “hell to pay” if it fails to disarm in Gaza, as he presented a united front with Israeli Prime Minister Benjamin Netanyahu.

“As winter draws in, civilians in Gaza are facing appalling conditions with heavy rainfall and temperatures dropping,” the ministers of Britain, Canada, Denmark, Finland, France, Iceland, Japan, Norway, Sweden and Switzerland said in a joint statement released by the UK’s Foreign Office.

“1.3 million people still require urgent shelter support. More than half of health facilities are only partially functional and face shortages of essential medical equipment and supplies. The total collapse of sanitation infrastructure has left 740,000 people vulnerable to toxic flooding,” the statement added.

Trump’s comments on Monday also downplayed reports of tensions with Netanyahu over the second stage of the fragile Gaza ceasefire.

The president, speaking at a news conference with Netanyahu in Florida, said Israel had “lived up” to its commitments and that the onus was on Hamas.

The foreign ministers in their statement said they welcomed the progress that had been made to end the bloodshed in Gaza and secure the release of Israeli hostages.

“However we will not lose focus on the plight of civilians in Gaza,” they said, calling on the government of Israel to take a string of “urgent and essential” steps.

These included ensuring that international NGOs could operate in Gaza in a “sustained and predictable” way.

“As 31 December approaches, many established international NGO partners are at risk of being deregistered because of the government of Israel’s restrictive new requirements,” the statement said.

It also called for the UN and its partners to be able to continue their work in Gaza and for the lifting of “unreasonable restrictions on imports considered to have a dual use”.

This included medical and shelter equipment.