If a person fails or refuses to obey the orders of the director issued under section 904.403, or fails or refuses to give or produce evidence when required, the director shall petition the district court in the county where the offense occurs for an order of contempt and the court shall proceed as for contempt of court.
Iowa Code § 904.404
83 Acts, ch 96, §31, 159 85 Acts, ch 21, §54