At least 22 people were killed, mostly women and children, and 30 others were wounded during a Israeli airstrike on a school for displaced children in Gaza, Palestinian health officials claimed Saturday.

Israel and Hezbollah exchanged fire on Saturday as rescue crews in Beirut searched the rubble of an apartment building that was leveled by an Israeli airstrike that killed at least 37 people.

At least 22 people, mostly women and children, have been killed in an Israeli strike on a school compound Saturday, Palestinian officials said, with Israel saying it targeted Hamas fighters sheltering there.

The airstrike took down an 8-story building in a densely populated neighborhood as Hezbollah members were meeting in the basement, according to Israel.

Israel's military says a top Hezbollah leader was among those killed in an Israeli airstrike on a Beirut apartment block. Lebanese officials on Saturday raised the death toll from Friday afternoon's airstrike to 37,

The attack, which hit the densely populated neighbourhood of Dahieh, a Hezbollah stronghold in southern Beirut, killed at least 37 people, including three children, and wounded 68 others, Lebanon’s health ministry said.

An Israeli strike on a school in northern Gaza on Saturday killed at least 22 people, according to the Gaza Health Ministry.

Palestinian health authorities said the attack killed 22 people, mostly women and children, who had sought shelter at the Zeitoun School in Gaza City. Israel said it believed Hamas militants were using the building.

Palestinians said an Israeli strike killed at least 22 people in a school sheltering displaced people in southern Gaza City on Saturday, while the Israeli military said the attack targeted a command centre of militant group Hamas.