BY CARMEN FORMAN and MATT DINGERBETHANY — Police have made an arrest in the case of Carina Saunders, the 19-year-old Mustang woman whose dismembered body was found in a duffle bag in Bethany in late 2011. Bethany police arrested Luis E. Ruiz, 37, on a murder complaint at 1 p.m.Read more on NewsOK.com