Updated at 5:45 p.m. ET
Harris County Sheriff Ron Hickman says a suspect is in custody for the killing of Deputy Darren Goforth.
Hickman announced at a press conference Saturday evening that the suspect, Shannon J. Miles, is facing capital murder charges. He also said Miles has a previous criminal history, including resisting arrest and disorderly conduct with a firearm.
The shooting appeared "unprovoked," Hickman said, and a motive has not been determined.
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