Overview
- Nancy Guthrie, 84, was last seen on the evening of January 31 and her family reported her missing on February 1; she remains missing with no publicly named suspect or arrest.
- Pima County officials have sent evidence to four specialized laboratories, including a private Deerfield Beach, Florida lab, and detectives traveled to that facility for advanced testing on challenging samples.
- Forensic teams are trying to extract profiles from a rootless hair and to deconvolute a DNA mixture that may include up to four contributors, a complexity that can delay or block genetic-genealogy matches.
- Savannah Guthrie has offered a $1 million reward and continues public appeals, while investigators emphasize keeping some details confidential to separate credible tips from opportunistic claims.
- Retired FBI agents say investigators are pursuing traditional avenues such as jail informants and monitoring inmate communications as a parallel path while lab work continues, and they note there has been no reported genetic-genealogy breakthrough.