Michael Zven Arch, also known as Reiner Ralph Schmolling, Jr., was found fatally shot outside a home in the 16000-block of Northwest Dairy Creek Road on the rural outskirts of North Plains, Oregon, around 5 p.m. on September 19, 2017. Deputies treated the scene as a homicide and confirmed his identity the next day.

Arch was 39 and had a lengthy criminal history in Washington County, including a 1997 standoff in which he shot a county detective and killed a K9. He had more recent convictions around May 2016 for aggravated theft, assault, menacing, and attempting to elude law enforcement. Investigators said the killing appeared rooted in familiarity rather than a random act.

Authorities linked 38-year-old Chad Brandon Pitcher to the shooting by about September 22 and later identified 40-year-old Christopher Stephens; Pitcher was arrested November 8 and charged with murder. Does anyone who knew Arch or frequented that area have information that could clarify what led to this killing?