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Dallas County Sheriff’s Office issues arrest warrants for employee following assault on inmate

The North Tower Detention Facility, part of the Dallas County Jail complex.
Camilo Diaz Jr.
/
KERA
The North Tower Detention Facility, part of the Dallas County Jail complex, is seen on June 30, 2025.

The Dallas County Sheriff’s Office has issued four arrest warrants for one of its own employees at the Dallas County Jail.

Treston L. Jones is a detention service officer with the jail’s special response team, which handles high-risk situations. An unnamed party filed a complaint against Jones, alleging that he had assaulted an inmate.

While the nature of the assault isn’t clear from a sheriff’s office press release, an internal investigation confirmed the allegation’s veracity.

A spokesperson for the sheriff’s office did not immediately return a call or email for comment.

Jones, who joined the sheriff’s office in September of 2020, has since been placed on administrative leave. The investigation is ongoing.

The Dallas County Sheriff’s Office operates the seventh-largest jail in the United States, according to its website. The average jail population is over 6,000 and the office has over 2,000 employees.

Got a tip? Email Andy Lusk at alusk@kera.org.

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Andy Lusk is KERA's mid-cities communities reporter. He is a returning Report for America corps member, having spent two years with KUCB, the NPR member station serving Alaska’s Aleutian and Pribilof Islands. While in Alaska, Andy was an award-winning general assignment reporter with a focus on local and tribal government. When he's not reporting, he's usually out hiking. Andy is an alumnus of New York University.