vicious murder. the 19-year-old burned alive. fox reporter sarah blue in batesville, mississippi. are police trying to find this woman's killer? >> reporter: well, the atf, u.s. marshals and fbi are now involved in jessica chambers' investigation providing resources to the mississippi bureau of investigation as well as the county sheriff's office and exactly were not told and last week we're told that those results are not in it yet but we did hear today that the autopsy results are in but they are not being released because law enforcement says it's an ongoing investigation. now, nine days ago, still not