An Israeli air strike on a multi-storey residential building in Beit Lahiya, northern Gaza, left dozens of Palestinians killed and wounded on Sunday morning.
The government media office in Gaza put the number of those killed at 72. It said the strike hit a residential building that housed members of six families.
Earlier on Sunday, an Israeli air strike killed at least 10 people in al-Bureij refugee camp in the central Gaza Strip, when a missile hit a house, medics said.