There has been a confirmed spotting of Mary Catherine Elizabeth Thomas and Tad Cummins in Oklahoma City on March 15.
Those photos have been added to the above gallery, which now includes all photos released in the active AMBER Alert.
The Tennessee Bureau of Investigation has released new photos in the AMBER Alert of Elizabeth Thomas, including a photo of Thomas and her former teacher at school in January, days before he is alleged to have had inappropriate contact with the teen.
Thomas, 15, is believed to be with her former teacher, 50-year-old Tad Cummins. Cummins is wanted for aggravated kidnapping and sexual contact with a minor. He is now on the TBI's Top 10 Most Wanted List.
The photos released on Monday show Cummins the week prior to kidnapping Thomas.
In a news conference Monday, TBI spokesperson Josh DeVine said they are releasing the new photos in order to give people a better sense of what Thomas and Cummins might look like.
This is the most recent photo of Thomas. DeVine said this is what they believe Thomas most looks like, which echoes the description of her the last outfit she was seen wearing.
"We do not believe Elizabeth Thomas left with a large amount of stuff," DeVine said. "She might very well have the same clothing she left with. She might be wearing that same clothing."
DeVine also said he believes Cummins might be wearing the same clothing he left with. TBI released security video of Cummins in the Columbia, Tenn. Walmart
TBI's concerns for Thomas' well-being are growing. Agents have said they have"no idea" where Thomas and Cummins are and have received no credible sightings, although they have received 250 tips from 24 different states.
"There have been no credible sitings and that's very rare for an AMBER Alert now almost seven days in to not have at least one credible sighting," DeVine said.
TBI asked people who live on rural property to drive around their property and look at their land for anything suspicious.
As for the silver Nissan Rogue TBI believes Cummins is driving, the agency said it's possible they are in a different vehicle. TBI is asking people with large business parking lots or parking garages to look around for the vehicle.
"If it's possible, we've thought of it and we're trying to use it, and they have not proven successful at this point," DeVine said.
TBI said Thomas is definitely a victim though she may not know it.
DeVine gave the following message to Elizabeth:
"We're still coming for you. We're going to do everything in our possibility, everything in our capabilities to bring you home. Your family wants you here and your friends want you here."
TBI said to Cummins that he still has the chance to do the right thing because this is not who his church, family or grandkids knows him to be. This echoes his wife's plea given in a news conference last week. \
Thomas and Cummins both posted to Instagram the day they both went missing. The TBI has not confirmed to Fox 17 these accounts belong to Thomas and Cummins but said Cummins may have planned to disappear with Thomas for weeks.
In her bio Thomas describes herself as a wife. On March 12th, Thomas wrote the caption #missioncompleted on a post that reads, “one day someone will hug you so tight, that all of your broken pieces will fit back together.”
The day they went missing, Cummins posted "something beautiful is on the horizon."
The FBI and National Center for Missing & Exploited Children are involved in the case.
Anyone who sees Cummins or Thomas should call 911 immediately. Anyone with information on their whereabouts should call 1-800-TBI-FIND.