Man Facing Trial After Point Defiance Park Stabbing Tied to Crime by DNA, Surveillance

Detective Ryan Beck of the Tacoma Police Department explained that the investigation generated more than a hundred leads from within and beyond Washington State. Despite numerous tips, none initially led to a suspect.

That changed over a month later when DNA collected from the scene was matched to Matthew. Detective Jennifer Quilio recounted the moment the victim was shown Matthew’s photograph during a lineup, she became visibly distressed and emotional, confirming the identification with tears.

Investigators also obtained surveillance footage that reportedly shows Matthew’s vehicle near the park at the time of the attack. A later search of his apartment and vehicle uncovered blood traces in multiple rooms, including on the floors, walls, clothing, and bedding, according to police.

Though the knife used in the attack has not been recovered, cadaver dogs searched the area extensively. Authorities believe Matthew may have tried to flee, citing evidence found in his vehicle at Seattle-Tacoma International Airport, including blood and a passport photo.

He was eventually arrested at San Francisco International Airport, where officers noted a hand injury. Matthew told investigators it was from skateboarding. He acknowledged visiting the park on the day of the incident but denied carrying a weapon or assaulting anyone.

The trial continues this week, with testimony expected from the trauma surgeon who treated the victim. Prosecutors may wrap up their case as early as Monday.