GREELEY, Colo. (KKTV) – A teenager’s death following a medical emergency at a youth detention facility last month is under investigation. Greeley police were called to Platte Valley Youth Services on the morning of Oct. 21 after a 16-year-old was found unconscious in his room and was unable to be revived. Officers were also told by staff that what appeared to be drugs had been found inside the detention center.