Passengers travelling to Dublin from Belfast last night experienced serious delays when a fire broke out on board a train.
It happened in the engine compartment of the 6.05pm Belfast to Connolly Enterprise.
The train was brought to a halt outside Newry, where four crews from the Northern Irish Fire Service attended the scene for several hours.
Irish Rail and Translink will work in conjunction with the Fire Service to investigate the cause of the incident.
A total of 114 passengers were eventually transferred onto a second train to Dublin. It arrived into Connolly station in the early hours of this morning.
Translink, Irish Rail's sister service in the North operating on the Enterprise line, has said services this morning are operating and the line is open.
Eddie Carroll is Group Commander within the Northern Ireland Fire & Rescue Service said that there was no danger to passengers.
"The passengers did remain on the train," he said. "Initially, the five crew members instigated emergency procedures and started evacuating passengers to the rear carriages of the train, when, on arrival, we ensured that the passengers stayed their for their own safety.
"At no point was any passengers or other members of the public exposed to any danger as a result of this fire."