The Brief Dallas Police Senior Corporal Robert Huynh turned himself in to the Dallas County Sheriff's Office on Thursday. Huynh has been charged with assault causing bodily injury and official oppression, both misdemeanor charges. A Dallas Police officer is facing multiple charges after turning himself in to the Dallas County Sheriff's Office. Dallas Police officer arrestedRobert HuynhWhat we know:The Dallas Police Department says Senior Corporal Robert Huynh turned himself in to the Dallas County Sheriff's Office on July 29. What we don't know:We don't know the nature of the charges that led to Huynh turning himself in.