On 01/28/2021, the Plymouth County Sheriff's Office conducted a traffic stop on a motor vehicle on Floyd Boulevard near Sioux City, Iowa for a speeding violation. The driver of the vehicle was identified as Michael James Vornbrock, of age 33 of Le Mars, Iowa. Vornbrock showed signs of impairment and was given field sobriety tests. Vornbrock showed several signs of impairment during field sobriety tests and was then transported to the Plymouth County Jail for further testing.  After further testing, Vornbrock was then booked into the Plymouth County Jail for OWI 1st offense and speeding 87/65.