Nearly three months after 84-year-old Nancy Guthrie vanished from her Catalina Foothills home, investigators continue pursuing advanced DNA testing on hair and blood evidence recovered from the scene, though authorities stress no major breakthroughs have been publicly confirmed as the search for the mother of "Today" show co-anchor Savannah Guthrie enters its 88th day.
Pima County Sheriff Chris Nanos and the FBI have described the investigation as active, with forensic work ongoing at multiple labs including the FBI's facility in Quantico. Sources familiar with the case told multiple outlets in mid-April that hair samples collected from inside Guthrie's home were forwarded for advanced genetic genealogy and next-generation sequencing, techniques that have solved long-cold cases by building family trees from distant relatives.
