The Israeli military struck and destroyed part of a hospital in northern Gaza early on Sunday morning, shortly after telling patients and staff to evacuate the site. The attack came hours after the Israeli government announced that its troops fighting elsewhere in the territory had expanded their occupation of the southern Gaza Strip, severing links between two strategically located Palestinian cities.

No one was killed in the attack on the Ahli Arab Hospital, but a child being treated for a head injury died because of the rushed evacuation, according to a statement released by the Anglican Church in Jerusalem, which oversees the medical center. The strike destroyed a laboratory and damaged a pharmacy, the emergency department and a church at the hospital compound in Zeitoun, the statement added.

The hospital had become one of the last mainstays of the health care system in Gaza, where medical centers have been frequently damaged and besieged during the war that began with the Hamas-led October 2023 attack on Israel. The World Health Organization reported last month that 33 of Gaza’s 36 hospitals had been damaged during the war, and only 21 remained partly functional. The W.H.O. also warned on Saturday that hospitals in Gaza face a looming medicine shortage because Israel has blocked aid deliveries for six weeks.

The Ahli Arab Hospital compound was first hit less than two weeks into the war, when a missile hit a parking lot on the site where dozens of displaced families were sheltering. Hamas blamed the strike on Israel, before Israel said it was caused by an errant rocket fired by Palestinian Islamic Jihad, a group allied with Hamas. U.S. intelligence officials later said they had “high confidence” in the Israeli account.

The Israeli military acknowledged responsibility on Sunday for the latest strike on the hospital, saying without offering evidence that the site had housed a Hamas command center. Both the military and the Anglican Church said that Israeli soldiers had called the hospital to order its evacuation before the strike. Neither the hospital authorities nor Hamas responded to questions about whether the hospital had been used by Hamas fighters.

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A Gaza paramedic for the Palestine Red Crescent Society who has been missing since Israeli forces ambushed a group of ambulances and other aid vehicles in late March is in Israeli custody, the Red Crescent and the International Committee of the Red Cross said on Sunday.

Israeli forces killed 15 other rescue and aid workers in the same attack, buried their bodies in a mass grave and crushed their ambulances, their fire truck and a United Nations vehicle — actions that have drawn international condemnation and scrutiny.

Witnesses have said that Asaad al-Nasasra, 47, the paramedic who disappeared after the March 23 attack, survived but was detained and taken away by Israeli soldiers. But there had been no official word of his whereabouts until Sunday, when the Red Crescent said the I.C.R.C. had notified it that he was being held by Israel.

The Red Cross said in a statement that it had received information that Mr. al-Nasasra was being held “in an Israeli place of detention.”

Asked for comment, the Israeli military replied with a statement that it had released last week saying that it was still investigating the attack. It has said it will not comment further until the investigation is complete.

The Israeli military has offered changing explanations for why its troops fired on the emergency vehicles, first saying that they had been “advancing suspiciously” without their lights on until a video of the attack contradicted that account. It initially said nine of those killed had been operatives from Hamas or Palestinian Islamic Jihad, another militant group, before saying, without providing evidence, that six operatives were killed in the attack.