Chelsea have suspended three supporters as the club investigates racist chanting and a black man being pushed on the Paris Metro, Sky News reports.
The commuter, Sylla Souleymane, appeared to be stopped from getting on an underground train by fans travelling to a Champions League game against Paris St Germain.
The incident on Tuesday evening was captured on video, including a chant of “we’re racist and that’s the way we like it”.
The club said three people had been suspended from its Stamford Bridge ground and that they would be banned for life if there was “sufficient evidence of their involvement in the incident”.
Chelsea said it had received “substantial information” following an appeal for witnesses and an investigation was ongoing.
Mr Souleymane has said he thinks the fans who abused him should be jailed for their actions.
The 33-year-old told Le Parisien newspaper: “These people, these English fans, must be found, punished and must be locked up. What happened should not go unpunished.”
He said he thought Chelsea and PSG should face sanctions because it was “also their fault”.
The married father-of-three, who was born in Paris but grew up in the town of Val d’Oise, told Le Parisien the whole incident lasted about six or seven minutes.
He said: “I wanted to get into the carriage but a group of English fans blocked me and pushed me away.
“I understood that it was Chelsea fans and I made the connection with the PSG match. I understand also that they were attacking me because of the colour of my skin.”
Mr Souleymane said it was not the first time he had been a victim of racism.
“You know, I live with racism. I was not really surprised by what happened to me even though it was the first time it had happened on the subway.”
At one point, staff from the train company tried to intervene to prevent any fighting, but he said they were more concerned with making sure the trains ran on time.
“I took the next metro and went back home without telling anyone, not even my wife or kids,” he added. “What would I have told my kids? That daddy was pushed in the Metro because he’s black?”
Mr Souleymane said he did not know he was at the centre of an international scandal until the paper alerted him to the video.
He said: “I did not know I had been filmed. The fact that I am now talking about it will give me the courage to complain to the police.”
Police in France said no arrests were made in relation to the match, which ended in a 1-1 draw.
Since the video appeared on websites on Wednesday, the behaviour of the fans has been widely condemned across the French and English media, and by FIFA president Sepp Blatter.