Detectives are appealing for witnesses to come forward following a mass brawl on a train.
The fight, involving a large group of youths, happened on a service between Balloch in West Dunbartonshire and Anniesland railway station in Glasgow at around 6.24pm on Thursday.
British Transport Police (BTP) said one person was arrested in connection with a breach of the peace offence and has since been released while enquiries continue.
A BTP spokesperson said: “Three people received treatment for superficial injuries.
“Any witnesses, or anyone with information, can contact BTP by texting 61016 or calling 0800 40 50 40, quoting reference 552 of 01/07/21.
“Alternatively, you can call Crimestoppers on 0800 555 111.”
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