(CNN) Nashville Mayor Megan Barry announced her resignation at a news conference Tuesday morning after she admitted to felony theft.

"My time today as your mayor concludes," Barry, a Democrat, told reporters, thanking the support staff she's worked with during her tenure.

"I sincerely hope and believe that my own actions will not tarnish or otherwise detract from all of the great work they do," she continued. Barry later tweeted that her tenure was "the privilege of my entire professional life."

Barry pleaded guilty earlier Tuesday morning to felony theft of property over $10,000, according to court documents obtained by CNN. She agreed to reimburse the city of Nashville $11,000 and serve three years of probation.

Also on Tuesday, the former head of Barry's security detail, Rob Forrest, pleaded guilty to theft of property over $10,000. He has agreed to serve three years supervised probation and to repay the city of Nashville $45,000, court documents obtained by CNN show.

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