You would be surprised how many killers bury the bodies in their own backyards, basements and apartments. John Wayne Gacy buried over 15 bodies in the crawl space of his basement, Jeffrey Dahmer kept body parts in his freezer and refrigerator he even had a barrel of acid in his apartment to dissolve them. Belle Guiness a prolific serial killer in the 1800's buried all the bodies in her yard. It happens. I'm not saying that this is the case here but you just never know. The smart criminals don't usually get caught and the prisons are full of the dumb ones.