A massive fight involving 15 people broke out on a train heading from Ayr to Glasgow Central at the weekend.
On the 11pm service on Saturday, September 18, the large brawl broke out in front of a packed carriage.
A number of people who were on the train at the time are yet to speak with British Transport Police, with officers now urging them to come forward with any information.
Enquiries are currently ongoing to establish the circumstances surrounding the incident.
Anyone who witnessed the incident is asked to contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 2100069865.
Alternatively you can call Crimestoppers anonymously on 0800 555 111.
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