NEW : This means the product will ship as received by the manufacturer, sealed, with all advertised components, and with the manufacturer warranty. NEW : Another man , 22 , is being `` detained for questioning '' in South Dakota , he says . Sherry Arnold was a teacher with the Sidney Public Schools in eastern Montana . She had last been seen six days ago out on a morning run .
NEW : One man , 47 , is being held in Arnold 's case in North Dakota , a police chief says . NEW : Another man , 22 , is being `` detained for questioning '' in South Dakota , he says . Sherry Arnold was a teacher with the Sidney Public Schools in eastern Montana . She had last been seen six days ago out on a morning run .