missed their targets by some 30 meters
officers said they found the death toll published by Hamas grossly exaggerated
The army fired three mortar shells, two of which hit the target and one missed by about 30 meters, causing the casualties at the school, whose number the IDF believes was inflated by Hamas.
Fog of war, but also fog of media war.
Update. Heh! Look at them. Haaretz: "IDF investigation shows errant mortar hit UN building in Gaza". Jerusalem Post: "IDF denies errant shell hit UNRWA school".