Oregon State Police is continuing the investigation and asking for the public's help following an early Sunday morning pedestrian-involved fatal traffic crash along Highway 18 about three miles west of Sheridan in Polk County. OSP and Yamhill County Medical Examiner haven't identified the male pedestrian victim who had no identification on his person.

According to Lieutenant Eric Davenport, on September 22, 2013 at approximately 2:00 a.m., OSP Northern Command Center dispatch was contacted by Yamhill County dispatch regarding the first of at least two reports of a man jumping out in front of traffic and acting erratically on Highway 18 near milepost 30. One of the reports indicated the man was throwing rocks at vehicles, jumped on the hood of a car, and pounded on its door. No OSP troopers were on duty at the time of the reports to respond and locate the pedestrian.

At approximately 2:19 a.m., OSP dispatch was notified that the man was struck by a passenger vehicle in the same area. Emergency responders arrived and pronounced the man deceased at the scene. The female driver that struck the man remained at the scene, was not injured, and is cooperating with the investigation. Her name is not available at this time.

The deceased pedestrian is described as a white male, early 20s, wearing blue jeans, light colored shirt, and a blue baseball cap with the letter "A" on the front. He has brown hair, two tattoos on right forearm, no eye glasses, and was not wearing any shoes that were found in the area. No height or weight provided. Also, found on his person was a broken cell phone and a flyer for a mixed martial arts event held in the local area.

OSP is asking anyone with information that will help identify the victim to call OSP Northern Command Center at  (800) 452-7888 .