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19-year-old Logan Schiendelman was last seen at his grandmother\u2019s house in Tumwater, Washington on May 19, 2016. Logan\u2019s car, a black 1996 Chrysler Sebring, was found the next day, abandoned on Interstate 5 just south of Olympia. His phone, wallet and driver\u2019s license were in the vehicle. Dateline\u2019s Josh Mankiewicz speaks with several of Logan\u2019s loved ones and Lt. Cameron Simper of the Thurston County Sheriff\u2019s Office. Logan is biracial and has black hair and brown eyes. He\u2019s 5\u201911\u201d and weighed 160 lbs. at the time of his disappearance. If you have information about Logan\u2019s case call the Thurston County Sheriff\u2019s Office at 360-786-5519. \nGet more information and see pictures of Logan Schiendelman here: https://www.nbcnews.com/datelinemissing