Authorities 'aware' of reports of possible ransom note in Nancy Guthrie disappearance

The Pima County Sheriff's Department in Tuscon, Arizona, confirmed it is "aware" of reports of a possible ransom note in relation to the disappearance of Nancy Guthrie, mother of NBC "Today" co-host Savannah Guthrie.

"We are aware of reports circulating about possible ransom note(s) regarding the investigation into Nancy Guthrie," the officials wrote in a statement Tuesday afternoon. 

The sheriff's office added it is taking all tips and leads "very seriously."

"Anything that comes in...