British Transport Police are intensifying their search for a man involved in a violent altercation that left another passenger unconscious on a London Overground train near Denmark Hill station. The incident, which was captured in a distressing video shared on social media, occurred during a service between Clapham Junction and Dalston Junction.

The video, which has rapidly circulated online, shows a heated argument between two men that quickly escalated into physical violence. According to witnesses, the confrontation began when the older man, dressed in a white T-shirt and dark shorts, addressed the younger man as “Afroman.” The younger individual, who was wearing a checked shirt over a yellow T-shirt, retaliated with a series of punches, knocking the older man to the floor of the train.

Horrified passengers attempted to intervene, with one woman heard pleading, “It’s not worth it, babe,” as the scuffle broke out. The video concludes with the victim appearing unconscious on the floor, surrounded by passengers urging the aggressor to relax.

The British Transport Police released a statement on Monday urging witnesses or the victim to come forward. “A video has circulated online showing two people in an altercation. It is believed this has taken place on the London Overground line between Clapham Junction and Dalston Junction and was believed to be near Denmark Hill Station,” said a spokesperson for the British Transport Police.

The police are asking anyone with information about the incident to contact them by texting 61016 or calling 0800 40 50 40, citing reference 237 of 21 July. Information can also be provided anonymously via Crimestoppers at 0800 555 111.

This incident has raised concerns about safety on public transportation, prompting calls for increased security measures and public awareness to prevent such violent encounters in the future.