Police have identified the man killed by a south-bound commuter train on the Hutt River Rail Bridge on Tuesday night.
Detective Sergeant Nick Pritchard said police were treating the death as "accidental" at this stage and had referred it to the coroner.
Police were not looking for anyone else in connection with the incident and would not be in a position to release the man's name until next of kin had been notified.
"We'd still like to speak to anyone who may have seen the man walking in the area last night," Mr Pritchard said.
The man died at the scene after suffering multiple extreme injuries to his body.
The death is the second on the Hutt line in recent weeks.
Last week, a 59-year-old man died after being hit by a train at Wingate station.
- The Dominion Post
Was the weekend's rain welcome relief for your garden/farm?Related story: Yesterday's drizzle no drought breaker for Wellington, Hawke's Bay