At least four Palestinians were killed in an Israeli airstrike on a school sheltering displaced persons in the northern Gaza Strip, Palestinian sources said on Sunday.

Palestinian security sources told Xinhua that an Israeli aircraft bombed the Umm al-Fahm school, which is located west of Beit Lahia town in northern Gaza and has now been converted into a shelter for displaced families.

Medical sources said the airstrike resulted in at least four deaths and several injuries with varying degrees of severity.