Detectives are appealing for witnesses after an incident that occurred on a train between Glasgow Central and Johnstone railway station.

Officers have released an image of a man they believe may have information that will assist their investigation into the incident, which took place on Wednesday, March 1.

The man is described as 5ft 11ins tall with short blue hair and a short brown beard. He also has a helix piercing and a lobe piercing on the left ear.

At the time, he was wearing a khaki green t-shirt, black puffer jacket, black trousers and black boots.

British Transport Police can be contacted on 0800 40 50 40 or by texting 61016, using reference number 2300023887.

Information can also be given anonymously to the independent charity Crimestoppers on 0800 555 111.