An investigation is under way today after a railway contract worker died when a two trains collided on the main Belfast to Bangor line.
Two other workers were injured as the engineering train crashed into the back of a stationary train opposite the City Airport Terminal on the Sydenham Bypass.
The dead man, who worked for English-based contractors Mowlem's, was part of a team relaying a section of the line in the early hours of this morning.
He has ben named as Mr Terence Lowry (39), from Wheatley in South Yorkshire.
It is understood he died when one of the trains pulling wagons carrying rail lines hit the other train.
The Sydenham Bypass was closed in both directions for a time but has since been reopened.
One of the injured men has since been discharged from the Royal Victoria Hospital while the condition of the other man is described as satisfactory.
Police and Northern Ireland transport company Translink are currently investigating the incident.
Translink spokesman Mr Ciaran Rogan said none of the company's staff were involved.
"Obviously our thoughts are with the family of the deceased. Clearly there will be an investigation between ourselves and the police service to establish what happened," he added.
PA