India, March 23 -- Pima County Sheriff Chris Nanos has said that the Nancy Guthrie case is "not even close" to a cold case. "We have some DNA that we think is still workable," he said during a 45-minute sit-down interview with longtime Tucson host Bill Buckmaster and Arizona Daily Star columnist Tim Steller on KVOI AM 1030's Bill Buckmaster Show.

Talking about the investigation, Nanos said that the Sheriff's Department is still working with the FBI, labs around the country and forensics examiners on "thousands (of hours) of video footage we still have to sort through."

"The case will get us there. We let the evidence show us the way, and that's what we base everything on," Nanos said. "Right now, everything is speculative. We don't have...