There’s something puzzling about the fanny pack and the car. If the killer arrived by car, why would he need a fanny bag? One possible explanation, though purely speculative, is that he intended to use the bag to carry something, like heaps of cash, and anticipated needing to climb. This suggests planning of the invasion. It could also imply that he didn’t use a car but arrived on foot or by bike, as a fanny bag would be more practical for hands free movement and would be easier to carry on the back rather than the front.