A train window was damaged after it came under fire from stone-throwing youths.
The incident happened on Sunday evening, between 6.51pm and 6.58pm.
Police said a group of youths had gathered at Shillingtons Bridge and threw stones at the train as it passed.
Constable Spiers appealed for information.
“We would like to hear from anyone who has any information in relation to this incident,” he said. “We would also ask anyone who notices any suspicious activity around the bridge to report it to us straight away on 101.”
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