AUSTIN, Texas (AP) – Federal and military investigators say a soldier missing since April was killed by a fellow soldier stationed at the same Texas base. A criminal complaint released by the U.S. Attorney’s Office for the Western District of Texas charges a civilian with helping hide the body of 20-year-old solider Vanessa Guillen. The document says the civilian helped the other soldier get rid of evidence after he bludgeoned Guillen with a hammer at Fort Hood and later dismembered the body. The Army said Wednesday that a soldier suspected in Guillen’s disappearance had killed himself. Officials identified him Thursday as Aaron David Robinson, of Calumet City, Illinois. Authorities identified the civilian as Cecily Aguilar of Killeen, Texas.