The investigation into the disappearance of Nancy Guthrie has been thrown into turmoil, shadowed by accusations of mishandled evidence and stalled progress. A leading forensic company has publicly questioned a critical decision made by the Pima County Sheriff's Department: sending vital evidence to a private lab in Florida, bypassing the capabilities of the FBI.
Kristen Mittelman, co-founder of Othram, a lab renowned for its groundbreaking work in genetic genealogy – including the identification of the Bryan Kohberger – expressed profound dismay. She questioned why the evidence wasn’t immediately sent to the FBI’s Quantico facility, a place equipped to process DNA with superior speed and efficiency, and seamlessly integrate it with Othram’s identity-inferring technology.
The chosen lab, DNA Labs International in Deerfield Beach, Florida, operates under a contract with the state of Arizona for biological laboratory services. However, critics argue their traditional methods consume precious evidence, a risk the FBI’s advanced techniques largely avoid. The stakes are particularly high in the Guthrie case, where every moment lost diminishes the chances of a successful resolution.
This isn’t the first time concerns have been raised about DNA Labs International’s handling of complex cases. Othram previously stepped in on the decades-old cold case of Evelyn Colon, a murder victim known only as Beth Doe, after the Florida lab failed to yield results. Colon’s identity remained a mystery for 45 years before Othram’s intervention finally brought closure.
A federal law enforcement source revealed that the evidence will likely need to be retested by the FBI regardless, adding another layer of delay and potential for evidence degradation. The source emphasized the FBI’s superior methodology and speed, stating that numerous cases sent to Florida have been unnecessarily “consumed” in the process.
Allegations have also surfaced accusing Pima County Sheriff Chris Nanos of actively obstructing the FBI’s access to the evidence. Officials claim this obstruction risks further jeopardizing the investigation, particularly in light of “earlier setbacks.” The criticism centers on a perceived reluctance to seek federal assistance sooner in the case.
Sheriff Nanos vehemently denies these accusations, stating his department simply prefers to have all evidence analyzed by a single laboratory. He claims a recent meeting with FBI agents resulted in a plea to avoid media attention, suggesting a desire to maintain a unified front despite underlying disagreements.
Adding to the urgency, the FBI recently released doorbell camera footage of a person of interest recorded near Guthrie’s home shortly before her disappearance. The individual is described as a male, approximately 5’9” to 5’10”, of average build, and was carrying an Ozark Trail Hiker Pack – a potentially crucial detail for investigators.
The timeline of events is chillingly precise. On January 31st, 2026, Guthrie was dropped off at home by family around 9:30-9:45 p.m. The garage door closed at 9:50 p.m. Then, a series of unsettling events unfolded: the doorbell camera disconnected at 1:47 a.m., motion was detected by a security camera at 2:12 a.m., and Guthrie’s pacemaker lost connection to its monitoring application at 2:28 a.m.
The following morning, February 1st, 2026, Guthrie was discovered missing when she failed to join her weekly church livestream. A 911 call was placed at 12:03 p.m., and deputies arrived at the scene twelve minutes later, initiating a search that continues to unfold under a cloud of controversy and mounting pressure.
