Nancy Guthrie ransom demands released by Pima County Sheriff's Department in bid to identify sender

TUCSON, Ariz. — The Pima County Sheriff's Department released a pair of ransom notes Friday in the hope that someone can identify the author due to similarities between them that indicate they were written by the same person, who authorities said used a "unique linguistic style." Authorities have not yet confirmed that the notes are authentic, but Guthrie's daughter, "Today" co-host Savannah Guthrie , has said she believes they may be — and investigators haven't ruled them out either. GOT A TIP?