The U.N. says it believes Israeli military was behind deadly strike on school . It says it is still reviewing what happened during exchange of fire with militants . ` ` It appears that there is nowhere where you can be safe , '' a UN official said . Amnesty International called for an independent investigation into what it described as `` a possible war crime . '' The shelling is the sixth time a UN facility has been hit during the Gaza War .
The U.N. says it believes Israeli military was behind deadly strike on school . It says it is still reviewing what happened during exchange of fire with militants . ` ` It appears that there is nowhere where you can be safe , '' a UN official said . The shelling is the sixth time a UN facility has been hit during the Gaza War .