You know there was an explosion. You know there were deaths. The reports just lied about the cause. So you do know all of that information. It's just whether or not people thought that the REASON behind it should be reported as that is helping the terrorists.
As of now we don't have enough bombs going off to NOT be explained away by a gas explosion in any place.
So as per my original post, the cover up is not that there was destruction but what cuased it.