The FBI now believes the three ransom letters that appeared in the media regarding the disappearance of Nancy Guthrie are fake. A federal official disclosed this information to Reuters on Tuesday. Nancy Guthrie, the 84-year-old mother of television host Savannah Guthrie, has been missing for five months. The letters had fueled speculation about a potential kidnapping and ransom demand. However, the FBI source indicated the letters are not credible and are being treated as false evidence. This development complicates the ongoing search for Guthrie and shifts the focus of the investigation. Authorities have not released further details regarding the authenticity of the letters or potential leads in the case.