Passengers on a train escaped serious injury after youths threw stones at the carriage while it was passing Whitehouse in Co Antrim last night (Saturday).
Police say the shattered window will cost thousands to replace.
Newtownabbey police are asking parents to be aware of where their children are. This is the latest in a series of anti-social behaviour incidents.
And they want anyone with information on last night’s incident to contact them.
“A number of youths have just thrown stones at a passing train at Whitehouse breaking a window on the train. This is a massive risk to passengers of the train who could have been seriously hurt. It’s also an inconvenience to passengers as this carriage will now be unusable and the window alone will cost £8000 to fix. Thankfully no one was hurt this time. if you know anything about this incident ring 101 and quote reference 1597 of the 18.01.2020,” added a police spokesperson.