Around 20 Hamas and Palestine Islamic Jihad fighters, including senior commanders, were operating from the school in Gaza City that was struck by the Israeli Air Force on Saturday, an Israeli military spokesperson said.

"The compound, and the mosque that was struck within it, served as an active Hamas and Islamic Jihad military facility," Lieutenant Colonel Nadav Shoshani said on X.

He added that casualty figures given by the Hamas-run media office "do not align with the information held by the IDF (Israeli Defense Forces), the precise munitions used, and the accuracy of the strike."

Gaza civil defense previously claimed three Israeli missiles hit the school while people performed dawn prayers, killing some 100 people.