CCTV has been passed onto the police following an incident where a man was accidentally locked in a bus.
A video has been circulating online of the man smashing a window to escape the vehicle at around 3am on Sunday morning.
The Department of Infrastructure says it's aware of the incident and internal procedures are underway.
It says it's working with the police on the matter, and has no further comment as an investigation is ongoing.
High ground could see 4 inches of snow on Saturday night
Mountain Road unlikely to open before Monday
Yellow warning for freezing temperatures tonight
School bangers night called off
AK47 and Uzi handed in to police
"No dispute" over Liverpool Ferry Terminal, says main contractor
More weekend bus strikes to come after 10-day walkout?
Minister to face question about bus strike