A hospital source in southern Gaza has said at least 10 people have been killed in a strike on a school turned shelter for displaced Palestinians, the fourth such attack in four days, AFP reports.

The Al-Awda school in Khan Younis was hit, leaving 10 dead and dozens wounded, said the source at the city’s Nasser hospital where the victims were taken.

There was no immediate comment from Israel, which has acknowledged carrying out three other strikes since Saturday on Gaza schools used as displacement shelters, killing a total of at least 20 people according to officials in the territory.