A man was killed by a train at a level crossing.
Emergency services pronounced him dead at the scene shortly after 10am yesterday morning (Sep 5).
The death happened at a level crossing between Crawley and Ifield.
Police officers are now trying to work out who he is so they can inform his family.
A British Transport Police spokesman said: “The incident is not being treated as suspicious and a file will be prepared for the coroner.”
Southern Rail confirmed a train on its Arun Valley route was involved.
A spokeswoman said the train involved was a lightly loaded service but that the incident led to disruption throughout the morning.