British Transport Police (BTP) have launched an appeal after a 15-year-old girl was seriously injured on board a Glasgow train.
The incident took place on-board the 9.23pm Glasgow Queen Street to Edinburgh Waverley rail service and officers have today released an image of a person they believe may be able to assist them with their enquiries in relation to the attack.
The image shows a man with short hair wearing a tracksuit and a orange Hi Vis vest.