Jens Laerke, spokesman for the UN humanitarian agency OCHA, said shelter items had been banned from entering Gaza for about five months — a period in which more than 700,000 people had been displaced or re-displaced.
“They may have been provided with a tent, and then they are displaced again and they have no possibility of taking the tent with them,” he told a press briefing in Geneva.
He said Israel had classified tents as “dual use” because they considered tent poles could potentially be used for a military purpose.
He decried “layers of bureaucracy which seem designed not to facilitate fast entry of anything but rather the opposite”.
Israel announced earlier this month that it intended to take over Gaza City and issued another displacement order to residents on Saturday.
Laerke said tents were still not being allowed into the territory.
The UN human rights office meanwhile said the Gaza City takeover plans bore “huge risks for civilians”.
“There are risks of mass displacement and more and more killings and more misery,” said spokesman Thameen Al-Kheetan.
He accused Israel of displacing Palestinians to areas where strikes were continuing.
Kheetan said “hundreds of thousands” were being told to go south to Al-Mawasi, which he said was still under bombardment.
He said Palestinians in Al-Mawasi had “little or no access to essential services and supplies, including food, water, electricity and tents”.
Across the Gaza Strip, Kheetan said the risk of starvation was “everywhere”.