Chelsea will support criminal prosecutions and ban any fans who were found to have prevented a black man from boarding a train in Paris and chanted: “We’re racist and that’s the way we like it.”

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Footage posted on The Guardian’s website shows the commuter trying to board a Metro train in the French capital but he is blocked by what appears to be a group of Chelsea fans travelling to the Parc des Princes for the 1-1 draw with Paris Saint-Germain on Tuesday night.

It is not confirmed if the men on the train were Chelsea supporters heading to the Champions League clash, but the club released a statement condemning the incident and said they will take action if supporters are found to be involved.

“Such behaviour is abhorrent and has no place in football or society,” a club spokesman said.

“We will support any criminal action against those involved, and should evidence point to involvement of Chelsea season-ticket holders or members the club will take the strongest possible action against them, including banning orders.”

Some individuals have been implicated on social media since the video was posted. Chelsea are working with the relevant authorities to identify if those involved have season tickets or any other connection to the club.

London’s Metropolitan Police, which monitors supporters during European matches, is aware of the incident, and working with the French authorities. 

British Prime Minister David Cameron said the incident appeared to be “extremely disturbing”.

“It’s obviously potentially a criminal offence and so I’m sure the French police will be looking at it very seriously,” he said.

“I know the British police will give every assistance that they can. I’m sure Chelsea will co-operate with that fully. These are very serious matters.”