Israeli aircraft have fired two missiles at a 12-storey apartment block in Gaza City, collapsing the building, sending a huge fireball into the sky and wounding at least 22 people, including 11 children, witnesses and Palestinian officials said.

A strike on a Gaza park has killed 10 people, including nine children.

United Nations Secretary-General Ban Ki-moon is demanding an end to the violence in Gaza “in the name of humanity”.