An IDF investigation into the deaths concluded, on 13 June 2006, that one piece of shrapnel removed from the body of Amneh Ghaliya did not match the metal signature of Israeli munitions, and that IDF shells or missiles would have left larger craters than found on the site of the incident. The report suggested the blast was probably caused by an explosive device buried in the sand, but did not determine whether it was planted by Palestinians (as the IDF committee head speculated but could not confirm) or was an old IDF explosive.