EDISON – A 22-year-old Woodbridge man died Tuesday evening in a one-car accident along Executive Avenue, near Meadow Road, police said.

The cause of the 8:20 p.m. accident that claimed the life of Addam Knowlson remains under investigation by the township police department and the Middlesex County Prosecutor’s Office.

A passing motorist dialed 9-1-1 after they noticed Knowlson’s black 2012 Ford Focus on the side of the road, but they told Officer Nicole Errico that they did not witness the accident itself.

Emergency medical technicians from JFK Medical Center, Edison firefighters and the Middlesex County Medical Examiner’s Office responded to the scene.