Israel stepped up its assault on Khan Younis in southern Gaza on Wednesday, pushing tanks westwards and prompting accusations from Jordan that its field hospital in the city had been badly damaged by nearby shelling.

The Jordanian army said it held Israel responsible for a “flagrant breach of international law” in what it said was the damage to the facility as a result of Israeli shelling in the vicinity. There was no immediate comment from the Israeli military.

People in and around another hospital, Nasser, fled as tanks approached the district overnight following an Israeli army statement that it had come under fire from the area. Hamas militants deny using health facilities for military operations.

Palestinian health officials said seven people were killed by Israeli air strikes that damaged homes near the hospital.

Many of the Nasser hospital staff have left for shelters further south, with just one doctor for more than 100 burn victims remaining, Sean Casey, World Health Organisation emergency medical teams coordinator in Gaza, said on January 9.

Only about a third of Gaza’s hospitals remain operational and some only partially.

Explosions from shelling and air strikes sounded further west in Khan Younis as the Israeli tanks moved on, with lines of thick black smoke rising from bomb sites. Witnesses said tanks and bulldozers had damaged a cemetery there before retreating to the city centre again.

Israel said it had killed six Palestinian fighters, including the southern district Hamas officer in charge of interrogating suspected spies. The military said the killing of counter-espionage officer Bilal Nofal “significantly impacts the terrorist organisation’s capacity to develop and enhance its capabilities” in a statement summarising its latest operations.

Further south in Rafah, people cried over several shrouded bodies, including of a young girl, Masa.

“We were asleep and then we found the missiles falling on us. We got up and couldn’t see anything. We started checking on each other. The girl was martyred,” said her aunt, Tahreer Shoman, adding that her siblings had been wounded but survived.

Israeli forces fought their way to the centre of Khan Younis more than a month ago and defence minister Yoav Gallant said on Monday that intense military operations in the south were drawing to a close, weeks after similar statements about northern Gaza.

Fighting raged in densely populated Jabalia in northern Gaza on Wednesday however, a day after Israeli tanks stormed back into parts of the north they had left last week.