(Fayette County, IN)--The Department of Homeland Security has now become involved in an investigation in Fayette County. According to the Facebook page of the Fayette County Sheriff’s Department, a positive indication of human remains was given by a canine at one of the ponds at the Mary Gray Bird Sanctuary. That area of the sanctuary is now off limits to the public and is under 24-hour surveillance by law enforcement agents. No other information has been provided, including what led authorities to search the pond. The property covers 264 acres and is operated by the Indiana Audubon Society.