UN Secretary-General Ban Ki-moon said on Thursday he was appalled by an attack on a UN-run school in the northern Gaza strip that had killed women, children and UN staff.

"Circumstances are still unclear. I strongly condemn this act," Ban said in a statement. "Many have been killed - including women and children, as well as UN staff."

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The Gaza health ministry said at least 15 people had been killed and some 200 wounded.


The IDF was looking into the matter.