The Israeli military has renewed its orders for Palestinian in the northern Gaza Strip to leave their homes and shelters as troops press on a weeklong offensive against militants.

Israel’s military said it was “operating with great force” against Hamas and allied groups and issued new evacuation orders, as it also continued its campaign in Lebanon.

An Israeli airstrike on a school sheltering displaced people in central Gaza killed at least 28 people including women and children on Thursday, while three hospitals in the north were told to evacuate,