The man died after colliding with a train in Wallaceville, Upper Hutt.
Service will be suspended between Trentham and Upper Hutt after a person arrives near Wallaceville Station. The accident occurred about 200 meters south of the station.
Police were hit by a train at 11:15 to confirm the person who died.
Serious conflicts are under investigation.
Metlink warned travelers at 11:30 am after the "emergency service incident" service was paused.
Twitter said the train service in the area is being replaced by a bus.
Train service was resumed from the Hutt Valley line before 2 o'clock.