(File Photo: Source for Photo: In this image provided by NBCUniversal, Savannah Guthrie, right, her mom Nancy speak, Wednesday, April 17, 2019, in New York. (Nathan Congleton/NBCUniversal via AP)

Noah Haswell, Beaver County Radio News

(Pima County, AZ) The sheriff overseeing the investigation into the disappearance of Savannah Guthrie’s mother, Nancy Guthrie, is sharing new details about the case as the search passes the 100-day mark.

In an interview with People magazine published Wednesday, Pima County Sheriff Chris Nanos discussed the investigation into Nancy Guthrie’s disappearance after she was reported missing from her Arizona home in early February.

Nancy Guthrie was last seen January 31st in the Catalina Foothills area north of Tucson. In February, the FBI released images showing an armed individual at her front door tampering with a security camera before her disappearance. Authorities have not identified the person shown in the images.

Nanos told People that investigators from the homicide division became involved early in the case after an initial assessment of the scene “didn’t look right,” and he also told the outlet: “The reason that homicide was called is because they are the investigative unit in charge of missing person. Every day, our DNA labs are working with our investigators, and they’re coming up with different ideas and different thoughts of how to help them make this DNA work for us. How can we do more with what we have? And so that’s why I say it is – I think we’re getting closer.”

Authorities said the investigation remains active. The Guthrie family has offered a reward of up to $1 million for information leading to Nancy Guthrie’s recovery.