Police have released a picture of a man following two women being verbally and physically assaulted on a train.

The incident took place on a Northern service between Blackburn and Preston.

A man boarded the 6.25pm service on Tuesday 10 October and began speaking to two girls, age 17.

He asked the pair if they were girls or boys and used transphobic language against them according to British Transport Police.

One of the victims took out her mobile phone and began to record what the man was saying.

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British Transport Police say the man then lunged at the victim, knocking the phone from her hand.

He then grabbed her arm and placed his knee into her back. The girl has bruising and swelling to her right-hand side.

The man left the train at Preston Station.

Update from British Transport Police on Friday (20 October):

“Officers from British Transport Police recently released an image of a man they wish to speak with in connection to a incident on board a train between Blackburn and Preston.

“Following this appeal, a man has contacted police and is helping them with their enquiries. He is due to attend custody and be interviewed in relation to this matter. Enquiries are on going.

“The public and the media are thanked for their help in sharing this appeal.”

Anyone with information is asked to call BTP on 0800 405040 or text us on 61016 reference 523 of 10/10/17. Alternatively, details can be passed anonymously to the independent charity Crimestoppers on 0800 555 111.