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The Tennessee Bureau of Investigation says they have confirmed a sighting of Tad Cummins and Elizabeth Thomas in Oklahoma City just days after their disappearance. Elizabeth is the subject of a nationwide Endangered Child Alert.

Elizabeth has been missing since March 13th from her home town of Columbia, Tenn. Tad Cummins, her suspected kidnapper, was a teacher at Elizabeth's school.

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The confirmed sighting of Elizabeth has given her family hope.

"First, it was just really good to see her, to see another picture of her was really good. And the second thing I realized, this is more useful for law enforcement looking for her because this is the first piece of proof we have that actually he did abduct her and the two of them are travelling together," said Elizabeth's father Anthony Thomas.

"If anybody sees anything don't waste any time. Call 911, they can get on the scene faster. Then call TBI. Then post it on social media," said Anthony Thomas.

The pictures released by the TBI are from a Walmart on East I-240 Service Road in Oklahoma City, Oklahoma. This was the afternoon of March 15th, just two days after they left Columbia.

The pictures show Cummins and Elizabeth shopping at the store. The TBI says Cummins used cash to purchase various food items, but didn't buy anything else of significance.

Tad Cummins, in a surveillance photo from a Walmart in Oklahoma City, Oklahoma on March 15, 2017. (Photo: TBI)

Tad Cummins and Elizabeth Thomas, in a surveillance photo from a Walmart in Oklahoma City, Oklahoma on March 15, 2017. (Photo: TBI)

Elizabeth Thomas, in a surveillance photo from a Walmart in Oklahoma City, Oklahoma on March 15, 2017. (Photo: TBI)

Tad Cummins and Elizabeth Thomas were spotted in Oklahoma City on March 15, 2017.

These are the first images to have been obtained by investigators since the alleged kidnapping. They clearly show Cummins with an altered appearance - darker hair. Elizabeth appears to have red hair, and she wasn't wearing her glasses.

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Investigators are trying to figure out what vehicle they may be traveling in.

#TNAMBERAlert SIGHTING CONFIRMED: Tad Cummins and Elizabeth Thomas were in Oklahoma City on March 15th. DETAILS: https://t.co/Tb5t7rMIN1 pic.twitter.com/QZottBtVgk — Josh DeVine (@TBIJoshDeVine) March 31, 2017

Thomas is a 15-year-old white female, with hazel eyes, stands 5’0” and weighs 120 pounds. She was last seen wearing a flannel shirt and black leggings. Cummins is a white male, who stands 6’0”, weighs approximately 200 pounds, and has brown hair and eyes.

He is believe to be armed with two handguns and driving a silver Nissan Rogue with Tennessee tag 976-ZPT. A warrant has been issued for Cummins for Sexual Contact with a Minor and Aggravated Kidnapping. On Friday, the TBI added him to the state’s ‘Top 10 Most Wanted’ list.

There is a $1,000 reward offered by the TBI for information leading to his capture. There is also a $5,000 reward being offered by Cummins' former coworkers.

MEDIA: Here's a quick video clip of Tad Cummins & Elizabeth Thomas entering the Walmart in Oklahoma City on 3/15.https://t.co/tIsI94rT6a — Tennessee Bureau of Investigation (@TBInvestigation) March 31, 2017