Footage Thought to Show Missing Teen and Teacher at Nebraska McDonald's Is Not Them: Authorities

Tennessee Bureau of Investigation had called the McDonald's sighting unconfirmed.

The Tennessee Bureau of Investigation (TBI) said images posted by Nebraska police of a "possible" sighting of the missing 15-year-old Tennessee teen and her teacher are not the pair.

The people in the sighting, which was captured on surveillance video at a McDonald’s Sunday night, looked similar to the duo, who have not been seen for three weeks.

Read: Teacher, Missing Student Spotted in Out-of-State Walmart Days After Disappearing

The Kearney Police Department in Nebraska posted images of the people they said were possibly Elizabeth Thomas, 15, and Tad Cummins, 50, inside an area McDonald’s, along with images of the two released by Tennessee police last month.

In the Facebook post, they added: “They were possibly driving the pickup in the attached photos. They could also still be using the Silver 2015 Nissan Rogue listed in the Amber Alert. Call 911 if you observe either of these vehicles or Elizabeth Thomas or Tad Cummins. Use caution as the suspect has possession of two handguns.”

The Tennessee Bureau of Investigation (TBI) have called the McDonald's sighting unconfirmed, saying they can't be certain the people in the footage are Thomas and Cummins.

Read: Teacher Researched Teen Marriage Online Before Kidnapping 15-Year-Old Student: Investigators

The images of the possible sighting in Nebraska came just several days after the TBI released surveillance images of the duo inside an Oklahoma City Walmart on Friday. The images were taken on March 15, two days after Thomas was allegedly abducted by the teacher in Columbia, Tenn.

In other developments, Cummins' wife, Jill, has filed for divorce. Her attorney says "the filing of the divorce is the first step to removing Jill from this situation. Jill will attempt to move forward with her life."

Watch: Student Claims She Saw Teacher Kiss Girl, 15, Before Alleged Kidnapping