He's either full blown psychotic or pretending to be so.
Either way, he's a very sick fuck looking for attention.
Put him in isolation, away from all media. Shun him in the media. Report nothing more about it until the court verdict is read.
Stick a needle in his arm and put him down like a rabid dog.
Give him, and all like him out there in society seeking a twisted sense of grandiosity no notoriety whatsoever. Make them rapidly fade into obscurity. Make them nothing more than an abberated footnote.