Nancy Guthrie investigation: What we know about the search

At least three news outlets have said they received a ransom note referring to Guthrie. NBC News reviewed a copy of the note, and its contents were consistent with the descriptions provided by the FBI and those news outlets.

No law enforcement agency has so far substantiated the note. The absence of direct communication with the possible kidnapper and the lack of a clear ransom demand is highly unusual, former FBI agents said.

Nanos has laid out the following timeline of events. All timestamps are in Mountain time.