After decades of investigating, detectives with the Weld County Sheriff’s Office announced that the oldest cold case in Weld County, Colorado, has finally been solved. On November 19, 1973, the unidentified remains of a woman were discovered near the bank of the St. Vrain River. The rural location where the body was found was north of Highway 66 and four miles west of Platteville, Colorado. Due to the police’s inability to identify the woman, she was called Jane Doe.