Therory: if you have played the game, the TV in his house, it said ''Freddy Fazbear Pizzarea 1983'' either this was the date it was created or it is the current year, we all know by now scott wouldnt put that there for no reason, and if you beat the game, in the end there is a chest with text saying something about leaving some things behind, so what i thin is, is that there was two bites, the first one being bite of '83 and they wanted the place to stay so they locked the body in the chest and put it somewhere, then the bite of '87 which was unable to stay hidden due to there being to many people there