Arrest made in city's oldest cold case murder thanks to genetic genealogy: Police

An arrest has been made in an Oregon city's oldest cold case murder thanks to the novel investigative tool of genetic genealogy, authorities said.

An arrest has been made in a decades-old Oregon cold case murder thanks to an investigative tool known as genetic genealogy, authorities said. Robert Plympton, now 58, was arrested on Tuesday for allegedly killing a 19-year-old college student in January 1980, according to police in Gresham. Barbara Mae Tucker was a sophomore studying business at Gresham's Mt. Hood Community College when she was sexually assaulted and beaten to death, said Gresham police. The teen was heading to an evening class when she was seen running onto a street from a wooded area by the edge of campus, according to police. Witnesses who were driving by later said they thought Tucker was waving and trying to get people’s attention, police said. A witness saw a man emerge from the shrubs and lead her toward campus, according to police.