Police investigating an incident on board a train earlier this year have released CCTV images of a man they are looking to speak to.
The nature of the incident, that took place on the Edinburgh Waverley to Airdrie service on January 17, remains unclear.
Officers from the British Transport Police are urging anyone who recognises the man to contact them as soon as possible.
He is described as being around 5ft7 and approximately 35 years old with short brown hair and patchy unshaven stubble.
At the time of the incident he was wearing a black padded style jacket with a hood and black jeans or trousers.
He also spoke with a strong Liverpool accent.
A spokesperson for British Transport Police said: “I would urge the male, or anyone who has information relating to the male depicted in the image, to make contact with British Transport Police.
“We can be contacted by text on 61016 or by calling 0800 40 50 40 quoting reference 2200005227.”