Alan Pollock removing student Sam Main from the train
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ScotRail passenger could face charges over train row

14 December 2011 Last updated at 13:48 GMT

A train passenger, who manhandled a student off a train after he swore at the ticket inspector, could face prosecution.

Alan Pollock, from Stirling, was filmed intervening in a dispute between a train conductor and a 19-year-old on-board a ScotRail service between Edinburgh and Perth.

The footage has been viewed on YouTube more than a million times.

James Cook reports.