Emir Nader

Tarek Jasharevich from the World Health Organization says he's deeply concerned by what's happened.

Israel said yesterday that the Kamal Adwan Hospital was a Hamas terrorist stronghold, but didn't provide specific detail or evidence. The military denied responsibility for a fire that broke out in the hospital during the evacuation.

After weeks in which staff issued desperate pleas to be protected from Israeli military strikes in and around its building, Palestinian officials say the Kamal Adwan Hospital now lies empty. Gaza's deputy health minister told the BBC that around 100 of the staff were interrogated overnight, with some receiving humiliating treatment.

A number have been released while others continue to be detained, including the hospital's director, Dr. Hossam Abou Safia. Medical staff report around 25 patients with acute needs were transferred to a nearby hospital that was itself evacuated by the Israeli military early this week and is badly damaged. It is reported to have no oxygen or water.

In the city of Khan Yunis in southern Gaza, wrapped bodies are lined up and funeral prayers recited after more Israeli airstrikes. Thirteen people were also killed when airstrikes struck a house in Gaza's Deir el-Balah neighborhood. And at least eight Palestinians were killed, including four children, when a school sheltering displaced families was hit near Gaza City.

The Israeli military said it was targeting a Hamas command centre that was operating there. A spokeswoman for the UN aid agency UNRWA, Juliet Tuma, called the attacks horrific.

At Kamal Adwan Hospital in the north of Gaza, staff have been issuing desperate pleas. The hospital director, Dr. Hassam Abou Safia, said he didn't know why they were being targeted. The The IDF said it hadn't used airstrikes on the hospital but didn't comment on reports of shelling and gunfire.

The World Health Organization has called for an immediate ceasefire around the vicinity of the hospital where 80 patients are receiving care.

Videos show the chaos in the moments after the strike, a floor of the Nasser hospital on fire and a ward destroyed. Ismail Barhum, the head of Hamas's financial department, is understood to have been one of the last two members of the group's political bureau remaining in Gaza. He was receiving treatment for injuries sustained in an earlier strike at the busy hospital's surgery department.

Palestinian health officials said a 16-year-old recovering from surgery was among those killed and many others were injured, including medical personnel. The head of the hospital accused Israel of violating all international and humanitarian laws. Israel's minister of defense said Barhum had become the new prime minister of Gaza in recent days, but Hamas hasn't confirmed this.

Israel is expanding its ground and air attacks, with initial reports of numerous deadly raids launched on Monday morning in cities including Rafah and Khan Yunis. On Sunday, health officials announced that the number of Palestinians killed since Israel began its campaign in Gaza has passed 50,000.

In a statement to the BBC, the Israeli military has said that Dr Abu Safia is currently being investigated by Israeli security forces in person. Yesterday, Physicians for Human Rights Israel said the military had told them they had no information of the arrest or detention of the well-known doctor.

Today's military statement doesn't offer an explanation for the confusion but repeats that he is suspected of being a terrorist and for holding a rank in Hamas. Dr Abu Safia was last seen walking into a tank in footage released by the Israeli military of the day it forcibly closed Kamal Adwan Hospital on the basis of it being an alleged stronghold to the Hamas militant group.

Physicians for Human Rights Israel say the doctor's case is part of a pattern of non-disclosure and unreliable information provided by the Israeli authorities regarding Palestinian detainees.