TUCSON, Ariz. — A former FBI special agent says maintaining public attention on the disappearance of Nancy Guthrie, the 84-year-old mother of "Today" show co-anchor Savannah Guthrie, remains essential to solving the case as the investigation stretches into its fifth month without a named suspect or confirmed leads on her whereabouts.

Speaking with NewsNation's Hena Doba on Sunday, former FBI special agent Jennifer Coffindaffer, who has closely followed the case since it began, said continued media coverage plays a critical role in generating tips from the public. "I think it is so important that her name stay out there and that somebody who knows something continues to see this," Coffindaffer said. "Everybody thinks because we're newsies or love crime and follow, that everybody knows about it. But the fact of the matter is, people really don't know about these cases. So, keeping it in the media is critical."

Nancy Guthrie was last seen at her home in the Catalina Foothills area of Tucson and was reported missing by her family on February 1, with investigators saying they believe she was abducted from the residence overnight between January 31 and February 1. Despite an extensive investigation involving the FBI and the Pima County Sheriff's Department, no suspects have been identified and Guthrie has not been located.

Coffindaffer, who spent 28 years as a federal agent, 25 of them with the FBI, and now serves as a NewsNation contributor and host of her own program, "Break the Case with Jen Coffindaffer FBI," has continued to offer regular analysis of developments in the........

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