Look! I am not saying that it could not have been an errant rocket from Israel... although I believe that there is only an infinitesimally slim chance that is what happened! We just do NOT know!
There is a much greater chance of it being a mistake by one of Hamas's crude unguided rockets that was cobbled together in some underground cave out of water main pipes.... and fueled with tons of explosive gasoline! Or, as the Israelis have claimed, an errant rocket from another jihadist group!
Wait before the evidence comes in before you make a bold claim!
Bold claims require bold and irrefutable evidence!
There is also more than enough evidence to prove that Hamas stores inordinately large amounts of weapons and explosives in civilian buildings such as hospitals and schools!