His name was out, within a few hours.
Maybe, it came from his fbi handler.
Was his handler Armand, Ray Epps...or, maybe the one that was with the jihadis in Garland, TX?
Well, he did leave the legally purchased rifle with its serial number at the scene. I’ve also read that he was identified by DNA from the rifle (which would explain the “known to police” bit if his DNA is on file).