The unidentified victim was on the tracks near Bridge and Ferry streets in Trenton when the fatal accident occurred about 10 p.m., said Amtrak spokesman Jason Abrams.
The person was pronounced dead at the scene, but not yet identified, Abrams said on Friday.
This is a developing story.
CHECK BACK FOR UPDATES
Click here to follow Daily Voice Ridgefield Park-Hasbrouck Heights and receive free news updates.