Chelsea have said that they will be taking strict action against fans found guilty of racism in the metro incident in ParisReuters

Despite the best efforts of football clubs to curb racism, cases seem to keep on appearing as a latest incident saw Chelsea fans refusing to let a black man board a metro train in Paris.

An amateur video of the incident clearly showed the West London supporters, who were on their way to the Parc des Princes to see their side take on Paris Saint-Germain in the first leg round of sixteen of the Champions League, denying entry to a black man and forcibly pushing him on to the platform, when the train stopped at the the Richelieu-Drouot station.

Finally when the train was about to leave the platform, the fans shouted: "We're racist, we're racist and that's the way we like it."

Many people including former footballers Stan Collymore and Jason Roberts took to social media to express their discontent.

"Chelsea fans. Save your spite for those on the train, I'm sure you'll want to see them banned from holding season tickets at your club," former Liverpool and Aston Villa striker Collymore tweeted.

"Like Jose [Mourinho] said...There is no racism in football..I wonder where these Chelsea fans learnt this behaviour..Hmmm.." added former Wigan Athletic and Blackburn striker Roberts on Twitter.

Chelsea have announced they will be supporting "any criminal action" against the people in the video, insisting that the club would be taking "the strongest possible action" if those fans turn out to be season ticket holders or members of the West London side.

"Such behaviour is abhorrent and has no place in football or society. We will support any criminal action against those involved, and should evidence point to the involvement of Chelsea season ticket holders or members the club will take the strongest possible action against them including banning orders," said a club spokesperson, according to the Daily Mail.

In another incident on Tuesday, French police were forced to use tear gas on a number of travelling Chelsea fans just minutes before kickoff outside the Parc des Princes.

According to the Daily Mail, around 200 away fans were teargassed outside a bar in the city centre in Paris when they tried to enter the stadium 10 minutes after the start of the match, which eventually ended in a 1-1 draw, with Branislav Ivanovic and Edinson Cavani scoring for Chelsea and PSG respectively.