Elizabeth Thomas and Tad Cummins were last seen in Oklahoma City on March 15, the TBI said Friday.
An Amber Alert was issued for Thomas on March 14. Authorities believe she was abducted by Cummins, who is her former teacher.
Cummins was added to TBI's Top 10 Most Wanted list. He is believed to be armed with two handguns.
Newly released images show Thomas and Cummins shopping at a Walmart in Oklahoma City on March 15. The TBI said Cummins used cash to purchase various food items, but nothing "else of significance."
The images are the first confirmed sighting of the two since Thomas' alleged kidnapping.
In the pictures, Cummins has apparently altered his appearance by darkening his hair and Thomas' hair looks to have been dyed red.
The TBI does not know what vehicle they were driving at the time, but investigations into that effort are ongoing.
This is the first confirmed sighting of Thomas or Cummins since the Tennessee teen’s disappearance.
A possible sighting in Collierville, Tenn. was reported Thursday afternoon, but the TBI confirmed that sighting was not credible.
To date, the TBI has received more than 1,200 tips from across the country.
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