Israeli forces have killed nearly 100 Palestinians, including 25 children, in an air raid on homes in north Gaza where displaced people were sheltering.

The bombing late on Monday targeted a five-storey building in Beit Lahia, a northern town that has been under a severe Israeli siege and ground offensive for 24 days

The targeted building belonged to the Abu Naser family, which had recently taken in displaced people expelled by Israeli troops from their homes in north Gaza.

Between 300 and 400 people were sleeping in the building at the time of the strike.

Local media reported that wounded people were dying due to the lack of functional hospitals in north Gaza, a result of the systematic destruction of health services by Israeli forces.

Kamal Adwan was the last operational hospital in north Gaza before Israeli forces raided it last week, detaining or expelling all medical staff except Abu Safia and another paediatrician.

Other hospitals in the area have ceased operations due to Israeli attacks and a blockade preventing fuel, food and medicine from entering.

Since the war on Gaza began nearly 13 months ago, Israeli forces have killed more than 43,000 Palestinians and wounded over 100,000. More than 10,000 are missing and presumed dead under the rubble.

At least 17,000 children and nearly 12,000 women are among the deceased, according to the Gaza-based government media office.