Police named 24-year-old Eric Christopher Petersen a person of interest on Saturday. He was arrested hours later in La Center, Washington for violating probation. He was booked into Clark County jail.
Police identified the homicide victim as 24-year-old Aimie Zdrantan. She died Friday.
The stabbing death was the second in as many weeks in Washington County.
Nicole Laube was killed Aug. 19 while working at the Commons at Timber Creek apartments in Cedar Mill. Police have yet to make an arrest in that case.
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