(Do the hands match the mysterious Canadian feet?)
But investigating police say that it wasn't the work of criminals (at least not that kind). Instead the hands are supposed to have come from a nearby forensic laboratory that keeps the preserved hands of some individuals for future identification purposes, and that these hadn't been disposed of properly. (I'll say!)
I worked at a hospital where something similar happened. A dog somehow got a hold of a leg and was running down the street with it. It caused quite a stir.