A group of teens tried to smash windows with a wooden bat and attacked train staff with a fire extinguisher on a service to Largs earlier today. 

The incident on the train at around 4:45pm terrified passengers as the teens rampaged through carriages. 

The group smashed the train's emergency alarms and tried to smash windows with a wooden bat. 

Concerns have previously been raised about unruly behaviour and vandalism on the route between Largs and Kilwinning. 

British Transport Police have been contacted for comment.