On October 19th, 2006, rangers received a report of a body in a backcountry area of the park. The victim has now been positively identified as James B. Vaughn, 51, of Yuma, Arizona. The preliminary report from the post mortem examination states that Vaughn most likely died of natural causes several months ago. Rangers continue to work with the FBI and the Pennington County Sheriff’s office to wrap up the investigation.