TULSA, Okla. (AP) — A white former Tulsa police officer who resigned after being acquitted of manslaughter in the fatal shooting of an unarmed black man was sworn in Thursday as a reserve deputy sheriff in a neighboring county.

Wearing a firearm on her hip and dressed in a Rogers County Sheriff's Office uniform, Betty Shelby took her oath of office at the agency in the nearby city of Claremore. While Shelby's duties haven't been determined, she will serve in a volunteer capacity and won't be paid, said Rogers County Sheriff Scott Walton.

Walton, who has been an ardent supporter of Shelby and a...