World News Tonight with David Muir Full Episode: Monday, February 17, 2026
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Feb 18, 2026 Aaron Katersky, ABC News chief investigative correspondent reporting from Tucson, gives on-scene analysis of the Nancy Guthrie disappearance. He discusses DNA findings from gloves, investigators tracing gear and purchases, drone searches for a pacemaker signal, and why authorities believe the abduction may have been targeted. Short updates also cover a Capitol confrontation and severe Western storms.
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Unknown DNA Spurs Broader Forensic Search
- DNA from the glove found two miles from Nancy Guthrie's home did not match any of the 22 million samples in the FBI database or the family's DNA.
- Investigators will expand searches to genealogy databases and trace clothing, backpack, gun, and holster purchases to develop leads.
Video And Purchases Are Key Leads
- The doorbell camera video remains the strongest evidence and investigators are identifying items like the backpack, mask, jacket, holster and gun.
- Authorities are canvassing Walmart and local gun shops for camera footage and purchase records tied to those items.
Drones Hunting Pacemaker Signal
- Search teams have used drone-mounted BlueFly technology to try to detect any signal from Nancy Guthrie's pacemaker.
- So far, that technology and other searches have produced no pacemaker signal or sign of her.