"1980 Cold Case Murder Solved Through DNA Evidence from Discarded Gum"
TL;DR
Robert Arthur Plympton was found guilty of the 1980 murder of Barbara Mae Tucker after DNA from a discarded piece of chewing gum linked him to the crime. Tucker, a 19-year-old college student, was kidnapped, sexually assaulted, and beaten to death on the Mount Hood Community College campus near Portland, Oregon. The case had remained unsolved for over four decades until the DNA evidence led to Plympton's conviction.
- DNA From Discarded Gum Leads to Conviction in 1980 Oregon Murder The New York Times
- Judge finds man guilty of murder in 1980 death of Mt. Hood Community College student KATU
- Ore. Man Convicted of 1980 Cold Case Murder After DNA Found on Chewing Gum Linked Him to Crime PEOPLE
- Man found guilty after 1980 death of Mt. Hood Community College student KOIN.com
- Troutdale man found guilty of murder in 1980 cold case KGW.com
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Read on The New York Times