CASS COUNTY, Neb. — Five Cass County, Iowa, residents were arrested Friday for conspiracy to distribute fentanyl, according to the Department of Justice. The five arrested on federal indictments were 19-year-old Mason Blaine Loudermilk of Atlantic, Iowa; 28-year-old Chase Daniel Jahnke of Lewis, Iowa; 26-year-old Kelsi Marie Thurman of Lewis, Iowa; 25-year-old Colby Ray Clarken of Atlantic, Iowa; and 19-year-old Collin Jacob Clarken of Atlantic, Iowa, according to court documents.