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Oregon Man Convicted of 40-Year-Old Murder Case Thanks to DNA Evidence

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Published on March 20, 2024
Oregon Man Convicted of 40-Year-Old Murder Case Thanks to DNA EvidenceSource: Google Street View

An Oregon man has been convicted of a murder that haunted the community for over four decades, thanks to the marriage of dogged police work and modern DNA technology. Robert Arthur Plympton, 60, was found guilty of the 1980 killing of Barbara Mae Tucker, a 19-year-old student from Mt. Hood Community College, as reported by OPB.

In a non-jury trial that spanned three weeks, Multnomah County Circuit Court Judge Amy Baggio rendered a verdict on Friday, convicting Plympton of one count of first-degree murder, and four counts of second-degree murder, bringing long-awaited closure to a case that had gone cold for years, DNA from a discarded gum piece was integral in identifying Plympton's connection to the crime leading to his arrest in June 2021, and Tucker's body was found by her fellow students in a wooded area near the college over 40 years earlier on Jan. 16, 1980. Her death had cast a long shadow over the campus and the surrounding community, the gravity of which was only lifted with this recent conviction.

The case had seen no significant advances for years until the advent of genetic genealogy, a technology that allows investigators to trace DNA samples back to family members, opened a new avenue for justice. The Gresham Police Department seized upon this method, linking Plympton to the crime through DNA analysis of the discarded gum, according to a statement obtained by USA Today. This scientific breakthrough was pivotal in resurrecting a cold case that had left Tucker's family and the community without answers for decades.

While Plympton faced charges for the sexual assault and beating death of Tucker, he was not convicted on charges of rape or sexual abuse, as prosecutors could not conclusively prove that the assault occurred while she was alive, Judge Baggio stated, a medical examiner had determined Tucker had been sexually assaulted and beaten to death, fuelling further the horror that gripped the community following the discovery of her body. This detail, reflecting the brutal nature of the crime, underscores Plympton's act and the tragedy that befell Tucker, a young woman whose life was cut short," according to a CBS News report.

The conviction is a testament to the resolve of law enforcement and the relentless pursuit of justice, providing a measure of peace to those affected by Tucker's untimely demise. With Plympton's conviction, the long shadow of uncertainty has been replaced by the light of resolution, offering a somber reflection on both the capabilities of modern science and the enduring need for answers in the face of tragedy.