Nancy Guthrie search recovers gloves appearing to match suspect's

The search for Savannah Guthrie's mom remains underway more than two weeks after she was last seen.

Law enforcement in southern Arizona continues to investigate the disappearance of Nancy Guthrie, the 84-year-old mother of "Today" anchor Savannah Guthrie. She was reported missing on Sunday, Feb. 1, and a reward of $100,000 has been offered for information leading to her recovery, double the initial reward of $50,000.

Nancy Guthrie has not been seen since Jan. 31, and investigators have said they believe she was taken from her home outside of Tucson against her will. The FBI has released images of a masked, armed man appearing to tamper with the camera at Guthrie's front door the morning she went missing, but the individual – who has been identified as a suspect in the case – has not been identified.

On Feb. 15, the FBI confirmed to USA TODAY that gloves that "appear to match the gloves of the subject in the surveillance video" were found 2 miles away from Guthrie's home "in a field near the side of the road" and sent to a lab for testing.

"Several hundred detectives and agents are currently assigned to this case, and you will continue to see increased law enforcement activity throughout Pima County as the investigation expands," the Pima County Sheriff's Department said on Feb. 11. "Investigators are working around the clock."

Investigators are continuing to follow up on leads. Here's the latest in the case as of Sunday, Feb. 15.

Law enforcement asks anyone with information to contact 1-800-CALL-FBI or tips.fbi.gov, the Pima County Sheriff's Department (520-351-4900) or 88-CRIME.

Gloves recovered seem to match those seen in surveillance video: FBI

On Feb. 13, the Pima County Sheriff's Department confirmed "several gloves have been located" during its investigation, the closest of which were found approximately two miles from Guthrie's home.

In a new statement shared with USA TODAY on Feb. 15, the FBI elaborated that "approximately 16 gloves" have been collected near the Guthrie house, most of which "were searchers' gloves that they discarded in various areas when they searched the vicinity."

But investigators have also recovered gloves that appear to "match the gloves of the subject in the surveillance video" released last week showing a man at Nancy Guthrie's front door, according to the FBI. The gloves, found "in a field near the side of the road," were sent to a private lab, and the FBI received preliminary results but is "awaiting quality control and official confirmation today before putting unknown male profile into" its database.

The Pima County Sheriff's Department previously confirmed law enforcement has also collected DNA from Guthrie's home that did not belong to her or anyone in close contact with her, and "investigators are working to identify who it belongs to." The department did not specify where the DNA was found.

Savannah Guthrie says 'we still have hope'

In a new video shared the evening of Feb. 15, Savannah Guthrie renewed her plea for her mother's return, sharing "we still have hope" two weeks after her mom was reported missing.

"And I wanted to say to whoever has her or knows where she is, that it's never too late. You're not lost or alone. And it is never too late to do the right thing, and we are here," she said. "We believe in the essential goodness of every human being, and it's never too late."

Have any arrests been made in the Nancy Guthrie case?

In its most recent update on Saturday, Feb. 14, the Pima County Sheriff's Department said investigators executed a court-ordered search at an Arizona residence the previous evening.

The warrant was based on a lead that investigators received, the department said, but no arrests were made.

The Sheriff's Department also confirmed that investigators conducted a traffic stop on Friday, Feb. 13, and questioned a person in connection with the case, but this did not result in an arrest.

Sheriff says Guthrie investigation could last 'years'

In an interview with The New York Times published on Feb. 13, Pima County Sheriff Chris Nanos said investigators are still "looking hard" for Nancy Guthrie and that he is certain they will find her and the person who took her.

"Maybe it's an hour from now," he told the NYT. "Maybe it's weeks or months or years from now. But we won't quit. We're going to find Nancy. We're going to find this guy."

What we know about suspect in Nancy Guthrie case

After the FBI released images of a person at Nancy Guthrie's front door the morning she disappeared, the bureau released more information about the suspect on Feb. 12.

In a social media post, the FBI said the individual seen in the doorbell camera footage is "a male, approximately 5'9" - 5'10" tall, with an average build," who is "wearing a black, 25-liter 'Ozark Trail Hiker Pack' backpack." These details were confirmed after a forensic analysis of the footage, the FBI said.

Contributing: Jeanine Santucci, Anthony Robledo and KiMi Robinson, USA TODAY