Sheriff says he believes Nancy Guthrie kidnapper could strike again

Over a month after Savannah Guthrie's 84-year-old mom was abducted in Arizona, Sheriff Chris Nanos is providing details on a possible motive.

Over a month after Savannah Guthrie's 84-year-old mother was abducted from her Arizona home, the sheriff in the case is providing details on a possible motive.

On Thursday, March 12, Pima County Sheriff Chris Nanos told "NBC Nightly News" that he believed Nancy Guthrie's kidnapper could strike again. The case of the "Today" show host's missing mother has captured national attention, after she was reportedly taken against her will in the early morning hours of Feb. 1. An exhaustive search for both her and her abductor has since swept across Arizona, while the Guthrie family has released direct pleas to the suspect.

"We believe we know why he did this, and we believe that it was targeted," Nanos told NBC correspondent Liz Kreutz. "We're not 100% sure of that, so it would be silly to tell people, 'Yeah, don't worry about it, you're not a target.'"

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"Don't think for a minute that because it happened to the Guthrie family, you're safe. No, keep your wits about you," he continued. "From day one, we had some strong beliefs about what happened, and those beliefs haven't diminished."