- In short: An Israeli air strike has hit a residential building in Gaza's southern city of Khan Younis.
- At least seven people were injured in the air strike.
- The air strike slammed into a building that was right next to Nasser Hospital.
An Israeli air strike has slammed into a residential building next to the main medical centre in Gaza's southern city of Khan Younis.
The air strike wounded at least seven people, hospital authorities and witnesses said on Wednesday, local time.
Nasser Hospital sits in the western part of the city, which is inside the Israeli-designated humanitarian "safe zone" where Palestinians have been told to go, according to maps provided by Israel's military.
The latest Israeli evacuation order affected about 250,000 people earlier this week across wide swathes of Gaza, the UN estimated.
Displaced families ordered out of eastern Khan Younis on Monday have struggled to find places to live in overcrowded shelters and open areas in the western parts of the city.
The air strike on Wednesday hit an area that also includes a school-turned-shelter for displaced people, many of whom are living in makeshift tents.
"We were sitting in this tent, three people, and we were surprised by the rubble and dust," said one man, Jalal Lafi, who was displaced from the city of Rafah in the south.
"The house was bombed without any warning, hit by two missiles in a row, one after another," he said, looking back over his shoulder at the rubble, his hair and clothes covered in grey soot.
The Israeli military did not immediately comment on the strike.
'Only place in the world people can't find safe refuge'
Andrea De Domenico, the head of the UN humanitarian office for the Palestinian territories, said Gaza is "the only place in the world where people cannot find a safe refuge, and can't leave the front line." Even in so-called safe areas there are bombings, he told reporters on Wednesday in Jerusalem.
On Tuesday, an Israeli air strike killed a prominent Palestinian doctor and eight members of his extended family, just hours after they complied with military orders to evacuate their home and moved to the Israeli-designated safe zone.
Most Palestinians seeking safety are either heading to a coastal area called Muwasi or the nearby city of Deir al-Balah, Mr De Domenico said.
The Israeli military said on Tuesday it estimates at least 1.8 million Palestinians are now in the humanitarian zone it declared, covering a stretch of about 14 kilometres along the Mediterranean.
Much of that area is now blanketed with tent camps that lack sanitation and medical facilities with limited access to aid, UN and humanitarian groups say.
Families are living amid mountains of trash and streams of water contaminated by sewage.
It's been "a major challenge" to even bring food to those areas, Mr De Domenico said.
Although the UN is now able to meet basic needs in northern Gaza, he said it's very difficult getting aid into the south.
Israel says it allows aid to enter via the Kerem Shalom crossing with southern Gaza, and blames the UN for not doing enough to move the aid.
The UN says fighting, Israeli military restrictions and general chaos — including criminal gangs taking aid off trucks in Gaza — makes it nearly impossible for aid workers to pick up truckloads of goods that Israel has let in.
The amount of food and other supplies getting into Gaza has plunged since Israel's offensive into Rafah began two months ago, causing widespread hunger and sparking fears of famine.
"It's an unendurable life," said Anwar Salman, a displaced Palestinian. "If they want to kill us, let them do it.
"Let them drop a nuclear bomb and finish us. We are fed up. We are tired. We are dying every day."
AP