Israeli forces have hit a school-turned-shelter housing refugees in northern Gaza, killing at least seven people in yet another attack targeting schools, according to a spokesperson for the Palestinian Civil Defence.The Kafr Qasim School in the Shati refugee camp, west of Gaza City, which was sheltering hundreds of displaced people, was targeted by an Israeli air strike, Mahmud Bassal said on Sunday.

Among the wounded were “serious cases”, he added.

The attack on the school comes a day after 22 people, including 13 children and six women, were killed by yet another Israeli air strike on a school sheltering war-displaced people in northern Gaza City.

The Israeli army claimed it targeted Hamas fighters present in the compound but provided no proof of its claims.

The military said it took measures to reduce the risk of harming “those not involved” such as using precision weaponry and intelligence information. The statement did not provide details about deaths.

Israel has repeatedly targeted schools and other civilian infrastructure claiming it was being used by Hamas fighters, but it has rarely provided proof of its claims.