Police have released an image of a man they want to speak to after a woman was allegedly sexually assaulted on a train from the Peak District.

The attack reportedly took place on the service from Matlock to Nottingham on September 30.

British Transport Police said the victim boarded the train at Duffield railway station in Derbyshire at around 4.45pm. As the young woman made her way through the carriage, a man in a group of three sexually assaulted her and made an inappropriate comment, the force said. He later got off the train in Nottingham.

Police are urging anyone with information to come forward as the investigation continues.

A spokesperson for the force said: "Do you recognise this man? Detectives investigating a sexual assault on board a train from Matlock to Nottingham ha

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