India, June 21 -- Nancy Guthrie Case Latest News: The mystery surrounding Nancy Guthrie's disappearance has taken another troubling turn while nearly five months after the 84 year old vanished from her Tucson area home, investigators remain without a public breakthrough, while a volunteer search effort across the border in Mexico has uncovered a grim discovery as 25 unmarked graves. None have been linked to Guthrie, but the findings have intensified attention on one of Arizona's most closely watched missing persons cases.

Nancy Guthrie Case Latest News: Investigation Faces New Technical Setbacks

As public concern grows, the Pima County Sheriff's Department has acknowledged a series of technical disruptions that have complicated operatio...