ON 8/29/2018 AT APPROXIMATELY 10:26 P.M., THE PLYMOUTH COUNTY SHERIFF'S OFFICE PERFORMED A TRAFFIC STOP ON A VEHICLE ON HIGHWAY 75 IN MERRILL, IOWA.  AS A RESULT, THE DRIVER OF THE VEHICLE, RACHELLE LYNN PRATT, AGE 39 OF SIOUX CITY, WAS PLACED UNDER ARREST ON A WEBSTER COUNTY WARRANT.  THE WEBSTER COUNTY WARRANT WAS FOR VIOLATION OF PROBATION  AND FAILURE TO APPEAR.  SHE WAS BOOKED INTO THE PLYMOUTH COUNTY JAIL.