The 34-year-old victim's body was found Friday along the railroad tracks near Linden Avenue beneath the Route 46 bridge, authorities said.
They suspect he may have fallen and hit his head.
The Bergen County Prosecutor's Major Crimes Unit Homicide Squad was investigating along with Ridgefield police. The county Medical Examiner collected the body for the autopsy.
CHECK BACK FOR MORE DETAILS
Click here to follow Daily Voice Lyndhurst and receive free news updates.