A fisherman on the Duck River in Bedford County discovered a mysterious human skull on a gravel bar in the river. Officials said the skull appears to be larger than a child’s, but smaller than an adult’s. Detectives scoured the area where it was found for much of the day but didn’t turn up any other clues. Investigators said there’s no indication of the skull’s age. Detectives with the Tennessee Bureau of Investigation said that skull will be taken to the University of Tennessee Department of Anthropology in Knoxville for examination. The TBI is also studying the skull in hopes of determining an identity.