For context, click More Facts on Gaza Beach Explosion as well as here.
Report: IDF Didn’t Shell Gaza Beach
Excerpts;
According to the findings, expected to be formally released on Tuesday, shrapnel taken from two wounded Palestinians who were evacuated to Israeli hospitals showed that the explosives were not made in Israel, IDF officials said.
Moreover, the investigation noted the absence of a large enough crater at the site of the explosion, as would be expected if an IDF shell had landed there.