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DALLAS (CBSDFW.COM) – A tribute to a fallen police officer is expected to make its way home tonight, after it was stolen from in front of Norma’s Café in Oak Cliff.

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Social media helped track down the suspected thief, who has promised to return it, after her parents spotted the surveillance pictures widely shared online.

The images show a young woman walking away carrying a “Back The Blue” sign honoring DART officer Brent Thompson, who died during last month’s ambush on police in downtown Dallas.

The sign was a personal gift from Thompson’s family.

“Any other sign would have been different, but the family drove it down from Corsicana and left it here,” said Donielle Edler, a regular customer, who often saw Thompson in the area.

“To take something so simple.  It seems so simple, but it means so much to so many people. You can’t just say it’s poor judgement. You have to know better,” she said.

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Surveillance video shows the young woman and her friends arrive, grow tired waiting for a table, and snatch the sign as they leave.

Wednesday afternoon, a woman called the restaurant claiming to be the thief’s mother.

She apologized profusely, and soon after, a message from her daughter appeared on Facebook promising to return the sign.

“Why would you want to take it? I don’t understand. It’s not a cool novelty thing. I mean, that’s what I don’t get,” said customer Jaclyn Stanford.

The motive for the theft is still unclear, but those at the restaurant are glad to know the sign may soon be back where it belongs.

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