A Thursday federal court filing by the FBI says Marquinta E. Jacobs fired a .45-caliber handgun at the victim, "striking him several times." It says a witness saw the Wednesday shooting after Jacobs and the victim, later identified as 51-year-old Lloyd Gibert of Elizabethtown, had a verbal exchange in the parking lot of the Army Human Resources Command building on the post at Fort Knox.
Investigators found eight shell casings at the scene.
Gibert was a human resources specialist with the US Army Human Resources Command's Field Artillery Branch Officer Personnel Management Directorate on Fort Knox. He previously served in the Army as a human resources specialist.
A criminal complaint filed in U.S. District Court Thursday says Jacobs fled to his mother's house in Portland, Tenn., but he was not there.
Fort Knox officials said a suspect wanted for questioning was apprehended Thursday in Portland. They identified the suspect as a Fort Knox soldier.
The criminal complaint was dismissed Friday and federal authorities transferred Jacobs to military custody, establishing the conditions for the US Army to have exclusive authority over the case.
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