Copycats? You must run with a strange crowd. I know of nobody that is willing to blow their @zz up, to get 15 seconds of fame. I am aware of some certain, uh Muzzies, that plan, coordinate, and do this. Methinks this media blank is to deny operational info to the folks that did this. I for one do not buy the lone firecracker story.
I think by copycats Jenny means other potential terrorists. The quiet would give the police a chance to get them before they strike. If they are warned by media, they will run.
Unfortunately, there are seriously unbalanced people out there who WOULD copycat a homicide bomber if they thought it would get them on the evening news in a last blaze of glory. "Top of the world, Ma!"