Nancy Guthrie Update: 'Big Mistakes' Made

Nancy Guthrie, the 84-year-old mother of Today show host Savannah Guthrie, remains missing more than a month after she was last seen at her home in the Catalina Foothills of Tucson, AZ on Jan. 31.

Earlier this week Pima County sheriff Chris Nanos provided an update on the case and revealed he believes "the investigators are definitely closer," to finding the alleged suspect caught on a doorbell camera at Guthrie's home.

Nanos said authorities are still having challenges trying to process mixed DNA found at Guthrie’s property and suggested the mixture could be from “several” people, which would make it difficult to extract a DNA profile from one person.

Former FBI Agent Reveals 'Big Mistakes' Made by Suspect

Former FBI profiler Jim Clemente told NewsNation's Brian Entin on Brian Entin Investigates this week that is seemed like the alleged suspect was “fairly sophisticated” until the doorbell camera showed him walking up to Guthrie's front door.

“When we actually saw his behavior, we could see that he wasn't at all ready for that door camera,” Clemente said. “He went out, walked out of the vestibule area and grabbed some brush to try to cover it and in the process, he revealed that I believe he has a tattoo on the underside of his right wrist.”

Clemente called those "really big mistakes" and pointed out the alleged suspect's decision not to cover his mouth.

“So he's breathing out DNA for 41 minutes in that house,” Clemente said. “He also, his eyes and his eyebrows and his eyelashes and some of his mustache hair was all exposed. That, that could have fallen out and been left at the crime scene. So, he made a lot of mistakes that, that really lower his criminal and forensic sophistication.”

Backpack, Gloves Haven't Produced New Leads

The alleged suspect was seen wearing the mask, gloves and a backpack that is only sold at Walmart. However, sheriff Nanos suggested the backpack may not have been purchased by the suspect at Walmart, instead offering another plausible explanation.

“We’ve now learned that maybe it wasn’t purchased out of Walmart,” he said. “That backpack is new, is exclusive to Walmart, but who’s to say I didn’t buy it and put it on eBay? … That’s what we’re looking at.”

Gloves found near the scene also sparked a strong reaction from Nanos, who called out the misinformation leaking from the case.

“There’s so much that everybody wants to know, but I would be very neglectful and irresponsible, as a law enforcement leader, to share that with everybody. You can’t. There is an investigation, there is a protocol to that effort,” Nanos admitted.

“There was some talk and discussion that it was police officers out in the field just discarding them, that is so far from the truth. We knew that at that time, we believed wholeheartedly that those gloves belonged to a restaurant and guess what? The owner of the glove, we found working at a restaurant across the street. It has nothing to do with the case."

Related: Nancy Guthrie Update: Savannah Guthrie Makes 1 Request