Following what health officials in the Hamas-run enclave claimed to be an Israeli attack on a Palestinian refugee camp, dozens of bodies lay covered in white, arranged against the wall of the Indonesian Hospital in the Gaza Strip on Tuesday.

The hospital had already been struggling under an influx of patients badly wounded by Israeli bombing, with medics setting up an operating room in a corridor because the main surgical theaters were full, they said.

Surgeons in Gaza have been struggling around the clock to rescue a steady stream of patients while dealing with running out of medicine, power outages, and air or artillery attacks that have shaken hospital structures.

Israeli tanks have entered Gaza, home to 2.3 million people, after three weeks of intense bombing of entire districts in response to an Oct. 7 attack by Hamas militants who killed 1,400 people in southern Israel and grabbed 240 hostages.

Health authorities in the Hamas-run strip say more than 8,500 people have been killed in Israel’s assault, including 3,500 children.