Pima County Sheriff Chris Nanos says a hair sample recovered from the Tucson home of Nancy Guthrie did not produce a usable DNA profile. Speaking as the investigation nears the six-month mark, Nanos said the sample tested “inconclusive,” adding that investigators continue to work the case and that it remains active. The sheriff did not describe further details of the testing process, the conditions under which the hair was found, or whether any other forensic evidence has produced identifying results. Both reports characterize the hair testing outcome as failing to generate a suspect DNA profile or returning inconclusive findings after laboratory review. Despite this setback, the investigation continues, with law enforcement indicating ongoing work as the case approaches the six-month timeline. No additional confirmed conclusions about Guthrie’s involvement, suspects, or new leads are provided in the accounts.