'It's never too late': Savannah Guthrie's new plea for mother's release as FBI analyses glove

Savannah Guthrie has issued a plea for her 84-year-old mother's release two weeks after she disappeared in a suspected kidnapping, telling anyone involved that "it is never too late to do the right thing".

In her latest video appeal, the US TV anchor addresses "whoever has her, or knows where she is" - adding that Nancy Guthrie's loved ones "still have hope".

Currently, investigators are analysing DNA found on a glove that they recovered, which appears to match one that was worn by a suspect who appeared in doorbell-camera footage taken the night Nancy Guthrie went missing.

Authorities believe the suspect in the video kidnapped Guthrie in the early hours of 1 February.

The FBI said on Sunday that investigators recovered the glove from a field near the side of the road about two miles (three km) from Guthrie's home in Tucson, Arizona.

The agency collected about 16 gloves from various locations near Nancy Guthrie's home, though most turned out to have been discarded by people searching for her.

"The one with the DNA profile recovered is different and appears to match the gloves of the subject in the surveillance video," the FBI said.

The agency said it has received preliminary DNA test results on the glove and is still waiting for "quality control and official confirmation" before entering an "unknown male profile" into its database.

Earlier this week, investigators released video footage taken from a doorbell camera at Guthrie's front door that showed a masked man wearing gloves and a backpack.

In the video, the suspect walks toward the camera and tries to cover it with his gloved hand before grabbing some brush from the front yard to block the camera's view.

After conducting a forensic analysis of the video, the FBI announced earlier this week that it believed the man was between 5ft 9in and 5ft 10in (175-177cm) tall with an average build.

The FBI also highlighted the backpack the suspect was wearing in the video, identifying it as a 25-litre Ozark Trail Hiker Pack.

The clothing and face mask worn by the suspect in the video appear to have been purchased at Walmart, Pima County Sheriff Chris Nanos told the BBC's US news partner CBS News. CBS also reported that the backpack is only sold at Walmart stores.

Officials have been reviewing surveillance footage from nearby Walmart locations, Nanos said, though a corporate spokesperson declined to comment to CBS.

Police have said the suspect description "remains a key focus", but added that "investigators are not ruling out any individuals or possibilities".

On Monday the sheriff leading the local investigation said Guthrie's family, including all siblings and their spouses, had "been cleared as possible suspects in this case".

Guthrie was last seen on the evening of 31 January, when a family member dropped her off at her home following a get-together at her other daughter Annie Guthrie's house.

Members of her church noticed her absence the following day and notified her family.

In the two weeks since Guthrie's disappearance, the FBI and Pima County Sheriff's Office have conducted a massive search operation involving helicopters, sniffer dogs and hundreds of officers, while taking in thousands of call-in tips.

Officials have warned that her health may be at severe risk without her medication. Nanos, the local sheriff, has said she is "not in good physical health" but has no reported cognitive issues.

Local officials have also said investigators found DNA at Guthrie's address that did not belong to her or anyone close to her.

The FBI has increased the reward for information about her disappearance from $50,000 (£36,700) to $100,000.