Two men failed in their attempt to hijack the Dublin-Belfast Enterprise train this morning.
At around 9.20 a.m. two masked men, one carrying a firearm, attempted to board the train at Kilmore, near Lurgan, Co Antrim.
A window was smashed during the incident, but the driver managed to complete the journey to Belfast unhurt, and raised the alarm there.
Police investigating the incident are appealing for information.