Oregon State Police said the remains of a teenager who went missing 54 years ago were identified this week.Sandra "Sandy" Young went missing from the Portland metro area more than five decades ago. Young, who was a Grant High School student at the time, was nowhere to be found since 1968 or 1969. On Feb. 23, 1970, a Boy Scout troop found a fully skeletonized young woman buried in a shallow grave at the far north end of Sauvie Island in Columbia County. Investigators recovered the remains and the remnants of a black curly wig.Investigators believed the trauma to the body indicated foul play. The body was moved to the state medical examiner facility in Clackamas County in 2004 with more than 100 additional sets of unidentified remains. After years of research, no genetic associations were discovered.In 2018, the Oregon State Police Medical Examiner’s Office was awarded a grant to perform innovative DNA studies on skeletal remains. A bone sample was submitted and resulted in a list of physical features.With the help of the Portland Police Bureau, investigative work led to the confirmation that the remains belong to Young, who was born on June 25, 1951.