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 .
The U.N. says it thinks Israeli artillery was behind deadly strike on school . Israel 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 U.N. official says . The shelling is the sixth time a U.N. facility has been hit during the Gaza conflict .