fbi has cleared the tulsa county sheriff 's department in the fatal shooting of an unarmed black man by a volunteer deputy earlier this month .
sheriff stanley glanz said in a press conference on monday that the special fbi agent in charge of the state of oklahoma , jim finch , who also said there were no civil rights violations in the incident .
he has been charged with second-degree manslaughter in the april 2 death and faces four years in prison if convicted .