British Transport Police have released images of men they would like to speak to in relation to an assault. Image: BTP

Three men have been assaulted on a train to Chelmsford.

The incident began when a teenager, dressed in a penguin costume, went to the train’s toilet.

Six men sitting nearby asked him if he supported Tottenham Hotspur.

After coming out the group blocked the 19-year-old’s way and became aggressive.

The victim’s father then tried to intervene.

British Transport Police say the group then attacked both the 56-year-old and his son.

Punching and kicking both men, the assault spilled out onto the platform as the train arrived at Chelmsford station.

A member of the public was assaulted and received a black eye when he tried stop the attack.

Father and son sustained multiple cuts and bruises to both face and body.

BTP have released CCTV images of persons who may be able to help them with their enquiries.

The incident took place on 21st December 2017 between 23:50 and 00:25 GMT.

A man wearing a penguin costume and his father were assaulted on a train to Chelmsford.

We’d like to speak to these people as they may have information – please text 61016 or call 0800 40 50 40 if you recognise them, ref 228 9/1/18.https://t.co/3G5MVVMP7V pic.twitter.com/xuarL8IX11

— BTP (@BTP) January 9, 2018

If you recognise them or have any other information which could help, please call BTP on 0800 40 50 40 or text 61016, reference number 228 of 9th January 2018.