Israeli airstrikes killed 11 Palestinians in Gaza City, medics have said, as Israeli forces send tanks into Jabalia in the north, where Palestinians and United Nations officials have expressed alarm over shortages of food and medicine.

Reuters quotes residents of Jabalia as saying that Israeli forces blew up clusters of houses from air, by tank shells and by placing bombs in buildings before blowing them up remotely.

Gaza’s civil emergency service said it evacuated several wounded people from a school sheltering displaced Palestinians that caught fire after being hit by Israeli tank shells.

“We have written our death notes, and we are not leaving Jabalia,” one resident told Reuters via a chat app.