A 16-year-old Enumclaw boy was killed in a Halloween night accident along state Route 410, and a 20-year-old man from Buckley is under investigation for vehicular homicide.

Now, as they sort out details surrounding the incident, Washington State Patrol authorities are putting out a call for witnesses.

Justin L. Relethford died from injuries sustained when he was struck by a 2012 Nissan pickup slightly before 8 p.m. Oct. 31.

According to information provided by the WSP, the victim was walking on the shoulder of the highway near the fog line when he was hit. A 16-year-old female, walking with the victim, was not injured.

The cause of the incident is under investigation and State Patrol detectives are seeking additional witnesses that may have seen the collision or any event leading up to or following the crash. Anyone with information about the accident—or knows somebody that does—is asked to contact Det. Greg Wilcoxson at 425-401-7746.