PORTLAND Ore. (KPTV) - Police in Montana arrested a 21-year-old man who is accused of stabbing and killing a woman in southeast Portland in October 2023.

Portland Police say Connor J. O’Brien, 21, was arrested in Missoula, Mont., on Monday in connection to the stabbing death of 22-year-old Tiara Atencio.

Investigators say Atencio was stabbed in the South Tabor neighborhood back on Oct. 19, 2023, and later died at the hospital as a result of her injuries.

O’Brien is awaiting extradition while lodged in the Missoula County Jail on charges of second-degree murder and unlawful use of a weapon.

Anyone with information related to the case who has not talked with police is asked to contact Homicidetips@police.portlandoregon.gov or 503-823-0479 and reference case number 23-274506.

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