The FBI says all three ransom-related messages tied to the disappearance of Nancy Guthrie are fake and continues forensic analysis while the investigation remains active.The Pima County Sheriff's Department declined operational assistance from United Cajun Navy, which offered canine, drone and thermal searches, and the family plus the FBI have raised a combined reward above $1.1M.Surveillance footage shows a masked person disabling a doorbell camera, drops of blood and a glove were found on the porch, and DNA from the glove did not match national DNA databases despite searches in Arizona and Mexico producing no leads.