Jose Mourinho admits Chelsea feel "ashamed" over the racial abuse of a black man by supporters on the Paris Metro on Tuesday night, but has sought to distance the club from the incident.

A commuter, identified in media reports as French-Mauritian Souleymane S, was blocked from boarding a train by what appeared to be a group of Chelsea fans travelling to the Parc des Princes for the Champions League match against Paris St Germain.

Three men could face life bans from football after being suspended from Stamford Bridge as part of the ongoing investigation that is being undertaken in conjunction with the Metropolitan and Paris police.

Chelsea have apologised in writing to Souleymane and invited him and his family to attend the second leg of the European clash against PSG on 11 March, while a spokesman stated that owner Roman Abramovich is "disgusted".

Mourinho, speaking about the incident for the first time, has revealed his own anguish but stresses that the men involved should not be viewed as genuine fans of the club.

"We feel ashamed but maybe we shouldn't because we - I - refuse to be connected with these people," Mourinho said.

"I'm connected with Chelsea and the many good things this club defends and represents. I left Chelsea in 2007 and I couldn't wait to come back.

"I felt ashamed when I knew what happened, but I repeat I'm a proud Chelsea manager because I know what this club is.

"I feel ashamed to have been connected with this sad episode that happened and I have no more words."

"I feel ashamed to have been connected with this sad episode that happened and I have no more words." - Jose Mourinho

Mourinho confirmed that his views are shared in Chelsea's dressing room.

"The reaction of the players is the same reaction that we all have," said Mourinho, who supports Souleymane's invitation to Stamford Bridge.

"I have a squad at Chelsea where 12 or 14 players have African nationality or an African connection.

"Our dressing room has always had big principles of equality over everything - race, religion, everything.

"So the dressing room reacted in the same way I did, with disappointment and obviously condemning the situation and supporting the gentleman involved.

"But there is also the feeling that while we feel ashamed, maybe we shouldn't because we are not this and these people don't belong to us.

"Since minute one we have done absolutely everything because we have zero tolerance to this. We have to keep feeling our club is a great club and has no space for people like this."

Mourinho's weekly press conference ahead of Saturday's Barclays Premier League match against Burnley at Stamford Bridge was dominated by discussion of the racist abuse witnessed on the Paris underground.

A club spokesman had opened proceedings with a statement in which he said Chelsea were "appalled by what we saw", branding the incident as "unforgivable" and declaring that "the people involved do not represent Chelsea football club".

Mourinho also referred to his comments relating to last October's calls to introduce the 'Rooney Rule' when he declared "there is no racism in football".

"I was asked about players choosing players or managers or not choosing them because of their race. Maybe I am naive, but I think that no club refuses a top manager or player because of his race," he said.

"This is what I said. I did not say there is no racism in football. This is not football, this is society, it is public transport. Maybe the people with Chelsea scarves don't even like football or Chelsea. I don't know."

When Mourinho was asked how offensive it is that the supporters used the name of club captain John Terry to justify their actions, the spokesman intervened by saying: "We're not interested in any excuses or stories to try and cover these actions".

Terry was given a four-match ban and fined £220,000 in 2012 after being found guilty by the Football Association of racially abusing QPR defender Anton Ferdinand.

Meanwhile, Mourinho revealed Terry is on course to secure a one-year contract extension.

Terry stated after Tuesday night's 1-1 draw at Paris St Germain that he would like to extend his stay at Stamford Bridge knowing that club policy is to only grant single season deals to players over 30 and Mourinho insists the 34-year-old's form points towards another campaign with the Premier League leaders.

"Everyone wants to stay at Chelsea, especially John Terry because he has been here all of his life," Mourinho said.

"He accepts our policy on players over 30 with a smile and accepts it as a challenge. Last season he won the challenge by performing so well and getting the one-year extension.

"This season he is winning the challenge and the right to have another one-year extension. It's what John wants, it's what the club wants."