State officials are investigating a drunk driving case in northeast Iowa. They’re trying to determine if the son of two Benton County officials got preferred treatment. 21-year old Nathaniel Forsyth was charged with drunk driving last summer and had a blood alcohol level of point-one-six-seven. He was given a deferred judgement despite state law against deferments when a person’s blood alcohol level is over point-one-five. The judge later rescinded the deferred judgement. Forsyth’s father is a Benton County Sheriff’s deputy and his mom is a clerk of court. State officials are investigating to see if that had any influence in the case.