Officer Betty Shelby, 42, entered a not guilty plea to first-degree manslaughter charges in the shooting death of Terence Crutcher, 40.
After killing 40-year-old Terence Crutcher last week, Shelby's attorney Scott Wood revealed that the officer had a temporary loss of hearing during the confrontation.
The Tulsa County District Attorney's office said that Shelby acted "unreasonably by escalating the situation from a confrontation," and became "emotionally involved," according to an affidavit obtained by ABC News.
