Palestinians reported a deadly Israeli strike on a Gaza City area school serving as a shelter on Saturday, as US secretary of state Antony Blinken was supposed to hear Arab demands for a ceasefire in a meeting in Jordan.

Witnesses said an Israeli strike hit Al-Fakhoura school in Jabalia refugee camp, killing and wounding many of the evacuees who had taken shelter there. At least 15 people died and dozens more were wounded, Mohammad Abu Selmeyah, the head of al-Shifa Hospital, said of the school incident.

Reuters pictures of the aftermath showed broken furniture and other belongings lying on the ground, patches of blood and people crying.

“People were preparing breakfast when suddenly the bombing started. I found my two girls, one of them was martyred and her head was hit, the second was wounded in her leg... the other girl as well was wounded with shrapnel,” one man said in video footage obtained by Reuters.

The ministry of health in Gaza said another Israeli missile strike killed two women at the door of the Nasser Children’s Hospital.

Several more people were injured, it said.

The Israeli military had no immediate comment on either reported strike and Reuters was not immediately able to verify any more details.

Hours earlier, Gaza health officials had said 15 people were killed in an Israeli air strike on an ambulance on Friday evening that was part of a convoy carrying injured Palestinians at Gaza’s biggest hospital, al-Shifa.

Israel’s military said it had identified and hit an ambulance “being used by a Hamas terrorist cell” and that a number of Hamas fighters were killed.

The Palestinian health ministry challenged Israel to provide proof that the ambulance was carrying militants. Israel said it intended to release additional information.

Israel’s ground forces encircled Gaza City on Thursday after stepping up a bombing campaign it says aims at wiping out Hamas, after the militant group killed 1,400 people and took more than 240 hostages in an October 7 assault in southern Israel.

Israel last month ordered all civilians to leave the northern part of the Gaza Strip, including Gaza City, and head to the south of the enclave, which it has also continued to bomb.

Israel has accused Hamas of hiding among civilians throughout the enclave and concealing command centres and tunnel entrances in al-Shifa, something Hamas and the hospital deny.

Gaza’s living conditions, already dire before the fighting, have deteriorated further. Food is scarce, residents have resorted to drinking salty water, medical services are collapsing and Gaza health officials say more than 9,250 Palestinians have been killed.

Israel’s military began widespread ground operations a week ago and in its latest update it said a combined tank and combat engineering unit carried out a “pinpoint raid” in the southern Gaza Strip “to map out buildings and neutralise explosives”.