British Transport Police have released urgent CCTV images as they try to track down a man pictured on an Edinburgh train.
Officers are hunting for the man who they "would like to speak to" after an incident occurred on the train he was traveling on.
According to the appeal, an incident had taken place on board the 10.23pm service from Edinburgh Waverley to Helensburgh Central.
Although no specific details about the incident have been released, it is confirmed to have happened at around 10.23pm as the train left Haymarket station.
Officers believe that the male shown in the images may have information that can assist them with their investigation and would urge the male shown or any members of the public who recognise him to contact police.
He is described as late 30's/early 40's, slim build, with brown unkept hair and a scruffy appearance.
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He was said to be wearing a black jacket, blue jumper, denim jeans (dirty looking), black dirty trainers and had what looks like either a scar or prominent cheekbone on left side of his face under his eye.
British Transport Police can be contacted by text on 61016 or by calling 0800 40 50 40 quoting reference 2000138206. Information can also be given anonymously to the independent charity Crimestoppers on 0800 555 111.
