A 33-year-old man suffered “serious” injuries during a Tuesday morning stabbing in a marshy, wooded area of Tigard, police say, spurring a large search for a suspect that came up empty.
Police responded about 7:15 a.m. to Southwest Cascade Avenue, a frontage road south of Scholls Ferry Road running along Oregon 217, according to a police spokesperson.
Canine officers and drone operators scoured the nearby rail line that runs behind the industrial area, picking through several encampments, debris and a small creek. Investigators briefly detained one man but released him…