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Forensic Analysis
MSP Crime Lab Tail Light Swab DNA — Item 3-1.1
Taillight swab interpreted by Porto as a three-person mixture including O'Keefe and two unknown contributors. He was not asked to compare Kevin Albert or Kenneth Berkowitz.
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Porto reported that item 3-1.1 yielded a three-contributor DNA mixture in which O'Keefe was included; the profile was 510 nonillion times more likely if it originated from O'Keefe and two unknown individuals than if it originated from three unknown unrelated individuals. He could not determine when the DNA was deposited, including whether it predated January 28-29, 2022.
A swab from the passenger-side taillight of Karen Read's vehicle (Massachusetts plate 3GC684), submitted as MSP Crime Lab item 3-1.1. Porto interpreted it as a three-contributor mixture that included O'Keefe, with two unknown contributors; he was not asked to compare Kevin Albert or Kenneth Berkowitz and did not identify the two unknown contributors.