A Metropolitan Police spokesman said on Sunday that the three men pictured in images released by Scotland Yard had been identified and that they were working with the French authorities.
The men were believed to be among a group of supporters who allegedly pushed a black man off the train while making racist chants on the way to Chelsea’s Champions League draw against Paris St Germain on Tuesday.
The spokesman said the force cannot arrest people for offences which take place outside the UK.
Footage posted online showed a man identified as Souleymane S. being pushed back on to the platform as they shouted “we’re racist, we’re racist and that’s the way we like it.”
The film, by Paris-based British journalist Paul Nolan, went viral in British and French media and the Chelsea football club has said it will support criminal action against the offenders.
Investigations have so far resulted in five people being suspended from Chelsea's Stamford Bridge.
Police are also looking for a second group of suspected Chelsea supporters who were heard shouting racist chants at a London train station the day after the game in Paris.