The FBI has amassed as many as 10,000 hours of video in the investigation intothe disappearance and possible abduction of Nancy Guthrie, an FBI official said Thursday.
The official described the collection, review and analysis of video as one of the key parts of the weekslong investigation, which began after Guthrie, 84, the mother of "TODAY" co-anchor Savannah Guthrie, was reported missing Feb. 1.
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Tools can be used to enhance the videos, but each one must be watched in real time, the FBI official said, noting that slowing them down or enhancing them takes more time.
The official said additional canvassing was done last week to gather more material from camera systems in the Arizona neighborhood where Guthrie lives.
Among the video is Ring camera footage obtained by Fox News Digital that shows a car driving around 2:30 a.m. the night Guthrie disappeared. The Pima County sheriff's office said it was aware of the video, which was taken about 2.5 miles from Guthrie's home. That is outside the 2-mile perimeter that investigators had sought video from.
The FBI releaseda widely circulated security video two weeks agoshowing a masked, armed man with a backpack appearing to tamper with a Google Nest doorbell camera at Guthrie's home.
Authorities have described the man as a suspect, but he has not been publicly identified. Pima County Sheriff Chris Nanos has said investigators believe Guthrie was taken from her Tucson-area home, possibly in the middle of the night.
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She was last seen around 9:45 p.m. Jan. 31 after dinner at her daughter Annie Guthrie's home, Nanos has said. She was reported missing after she failed to show up at a friend's house to watch a virtual church service.
Savannah Guthrie announced Tuesdaythat her family is offering a reward of up to $1 million for her mother's recovery.
"Please keep praying without ceasing," she said in an Instagram video. "We still believe. We still believe in a miracle. We still believe that she can come home, hope against hope. As my sister says, 'We are blowing on the embers of hope.'"
FBI Director Kash Patel has said the images from the Nest camera were recovered from "residual data in backend systems" because Guthrie did not have a subscription that would have saved the video.
Patel said the images were captured the morning Guthrie disappeared.Two law enforcement sources told NBC News this weekthat one of the images he released was captured earlier.
The agency has declined to comment on possible dates linked to the image, which shows a masked man without a backpack. The Pima County Sheriff's Department has said any suggestion that it was taken on a different day is "purely speculative."
Authorities are examining other potential evidence, including DNA collected from Guthrie's home and related search locations. Nanos has said authoritiesmay use genetic genealogy— a forensic tool that combines advanced DNA analysis with traditional genealogical research — in the investigation.