What we know about the unverified Nancy Guthrie ransom notes

The FBI joined the search for the mother of “Today” anchor, Savannah Guthrie, after authorities said she was taken from her home. The Pima County Sheriff’s Department says they are aware of reports of the ransom notes that were sent to TMZ and a local news station. Authorities have not confirmed the authenticity of the notes, but the Pima County Sheriff says they are not dismissing them.