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Story summary
- Sheriff Chris Nanos said testing a hair sample from Nancy Guthrie’s Tucson home yielded no DNA, while blood and other scene evidence have not identified a suspect.
- The doorbell camera captured a masked male 5 ft 9 in to 5 ft 10 in tall with a Trail backpack.
- A reward over $1.2 million remains unclaimed for tips leading to an arrest.
- Nanos said he is optimistic the case will be solved with FBI cooperation.
