UNION COUNTY, Tennessee — An investigation by the Tennessee Bureau of Investigation has resulted in the indictment of 32-year-old, former Union County Deputy, Ashton Lambert.

According to the TBI, at the request of 8th Judicial District Attorney General Jared Effler, TBI agents began investigating the circumstances leading to a use-of-force incident involving now-former Union County Sheriff's Office Deputy Lambert.

During the investigation, agents learned that on April 10, 2025, Lambert used excessive force during the arrest of a woman in Maynardville, which resulted in his termination from UCSO.

On Dec. 2, the Union County Grand Jury returned indictments charging Ashton Lambert with assault and official oppression, TBI said.

On Thursday, Dec. 11, the TBI said that Lambert turned himse

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