Gaza has become a "mass grave" for Palestinians and those trying to help them, medical charity MSF said on Wednesday.

The airstrike destroyed parts of Al-Ahli Baptist Hospital and forced predawn evacuations of patients and staff members.

At least 27 Palestinians have been killed in an Israeli air strike on a school in northern Gaza that was serving as a shelter for displaced families, the Hamas-run health ministry says.Dozens more were wounded when the Dar al-Arqam school in the north-eastern Tuffah district of Gaza City was hit,