(KOTV-TV) CBS News has learned that a 2009 investigation by the Tulsa Sheriff's Office concluded that there were concerns over Robert Bates behavior in the field. Bates, a 73-year-old reserve deputy, pleaded not guilty to second-degree manslaughter charges in the death of Eric Harris. Bates says he shot and killed Harris by mistake after pulling his gun instead of his Taser.
Since the incident there have been allegations that Bates was not properly trained. CBS News learned that in 2009, the Tulsa Sheriff's Office launched an internal investigation to find out if Bates received special treatment during training and while working as a reserve deputy. They also investigated whether supervisors pressured training officers on Bates' behalf.