Pima County sheriff warns in NBC interview DNA tech issues in Nancy Guthrie case may take ‘months’ to resolve

DNA challenges have complicated the Nancy Guthrie missing person case as mixed samples delay analysis, Pima County Sheriff Chris Nanos says, but investigation continues despite setbacks.

This powerful forensic tool is cracking cold cases — but price tag is often an obstacle

When a homicide detective in California’s Central Valley last year reopened the investigation into the unsolved killing of a ...

Investigators in Nancy Guthrie case turn to genetic genealogy for DNA leads, a tactic that's cracked big cases before

Investigators in the Nancy Guthrie case have turned to genetic genealogy as they try to make the most of potential DNA ...