Investigators looking into the disappearance of Nancy Guthrie, the 84-year-old mother of Today co-anchor Savannah Guthrie, are examining a newly reported possible ransom note. The Pima County Sheriff's Department said it is working to establish whether the information is credible. Authorities are also reviewing social media posts discussing the note, but have not confirmed its origin or contents. It is the latest potential lead in a case that has remained unresolved since Nancy Guthrie disappeared from her Arizona home in late January. The sheriff's department has previously received other purported ransom notes and made some public as part of its efforts to generate leads. Officials have not said whether the latest note represents a significant development. #nancyguthrie #savannahguthrie #news #usa #missing