Seven aid workers with World Central Kitchen were killed during an Israel Defense Forces attack in Gaza, the food-relief organization said, adding that it plans to pause its operations in the region.

“This is not only an attack against WCK, this is an attack on humanitarian organizations showing up in the most dire of situations where food is being used as a weapon of war,” CEO Erin Gore said in a statement. “This is unforgivable.”

The dead included Australian, Polish, British and Palestinian aid workers, WCK said. One was a dual American-Canadian citizen, the organization said.

The IDF said in a statement that it was conducting a “thorough review at the highest levels to understand the circumstances of this tragic incident.”

“The IDF makes extensive efforts to enable the safe delivery of humanitarian aid, and has been working closely with WCK in their vital efforts to provide food and humanitarian aid to the people of Gaza,” the IDF said in a statement.

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