PORTLAND — Two bodies found in a forested park in Portland have been identified as a missing 15-year-old girl and a 23-year-old man who was the subject of a sexual abuse investigation involving the teen, police said Friday. Autopsies confirmed the bodies were those of Annieka Vaughan, of Aloha, Oregon, and Zachary Petersen, of Pasco, Washington. The bodies were found Wednesday by a cadaver dog about 80 feet (24 meters) off a steep trail in Forest Park, hidden from sight in a tree well, authorities have said. Evidence recovered during the autopsies showed that Petersen shot Vaughan and then shot himself, police said Friday in a news statement. Vaughan ran away Oct.