That's why the complex already has false evidence to frame other crime lords that are notorious is jump city.

Jack already plans on leveling the building making it difficult to find evidence to begin with, but if that evidence is set right, the complex will continue its secrecy. After all, the only people that know of the complex are those that have been hunted and so far, no hunt has ever gone unsuccessful.

They have been doing things for a long time and simple death won't get them noticed anytime soon.