If only he had teleportation

Then he wouldn't have to blow himself up. Just think about it he could have committed his vile deed then teleported the hell out of there. Most likely he would set the coordinates to a safe haven (let’s say its on earth). But even then, after such a heinous act the world would be looking for his sorry butt so maybe he is better of dead. Certainly the guy couldn’t escape from that crowd after pulling the trigger. And besides people like him don’t think straight he knew he was going to die no matter what, so why not go out with a bang?