A strand of DNA recovered from Nancy Guthrie’s Arizona home is undergoing extensive testing at the FBI’s crime lab as the ...

The FBI was shut out of the Nancy Guthrie investigation for the first four days after the mother of the "Today Show" host ...

The FBI has received DNA evidence recovered from the Tucson, Arizona, home of Nancy Guthrie, including test results from a hair sample, sources familiar with the investigation told Fox News Digital. A ...

The San Francisco forensics lab that helped crack the Gilgo Beach serial killer case is now believed to be involved in the Nancy Guthrie investigation.

Nancy Guthrie, the 84-year-old mother of NBC "Today" show co-host Savannah Guthrie, has been missing for 80 days since the suspected abduction from her Tucson-area home on Feb. 1. DNA evidence ...

FBI analysts are still testing DNA from missing 84‑year‑old Nancy Guthrie's Arizona home as the case passes 100 days, with no ...

Top audit scores: The lab earned a perfect FBI audit score and nearly perfect ANAB ISO audit, exceeding 1,000 criteria. From setback to success: After a 2011 suspension, the lab rebuilt its reputation ...