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Police were called to an incident at Ashford International station this morningand arrested a man.
It is believed that five police cars were at the side for domestic passengers at around 11am.
A man is reported to have been causing a disturbance on the train. He was arrested on suspicion of a public order offence and remains in custody.
A spokesperson for British Transport Police said: "Shortly before 11am, officers were called to Ashford station following a report of a man causing a disturbance on a train.
"Officers attended and a man was arrested on suspicion of a public order offence. He remains in custody whilst enquiries continue."