Seven men wanted for questioning over alleged racist chanting at St Pancras Station following a Chelsea Champions League match earlier this month have come forward, British Transport Police said.
Police said they would be interviewed in due course.
BTP released images of the seven men taken at the London station at on February 18 in a bid to identify them.
This was the day after an incident on the Paris Metro before Chelsea's match with Paris St Germain, when a man was subjected to alleged racist abuse.
An investigation has been launched after unauthorised drones were spotted flying over Paris for a second night in a row.
Five drones were seen last night in addition to the five spotted a night earlier, local media reported.
Stephane Le Foll, a spokesman for the French government, said the drones were not a security risk and told a press conference: "There is nothing to worry about.
"Drone have been spotted and investigations launched .... We are mobilised on a matter which is, and should, be taken seriously."
Paris has remained on a state of high alert following last month's attacks on the offices of Charlie Hebdo and a Jewish supermarket by Islamist extremists.
The American Embassy, the Eiffel Tower and the Louvre Museum were just some of locations that the drones were spotted flying over.Read the full story ›
The WAVE Trauma Centre, which works to support victims of Northern Ireland's so-called Troubles, said it has suspended a part-time worker pending further investigations into the Paris incident.
As this matter is subject to an investigation by the Metropolitan Police it would not be appropriate to comment further at this stage.
A former policeman who is one of the three Chelsea fans police are looking to speak to about the alleged racist attack on a black man in Paris has apologised for his involvement.
Richard Barklie, 50, an ex-Royal Ulster Constabulary officer, has insisted he is not a racist.
He said through is lawyer tonight that he denies singing any offensive songs and that he was travelling alone. Barklie, who is currently a director with the human rights organisation the World Human Rights Forum, admitted his involvement in an "incident" that resulted in Souleymane S being "unable to enter part of the train".
He also said he wanted give police an account that would explain the "context and circumstances" of the situation and insisted he has never been part of any "group or faction" of Chelsea fans. His lawyer said:
Pending formal engagement with police, our client is anxious to put on record his total abhorrence for racism and any activity associated with it.
As someone who has spent years working with disadvantaged communities in Africa and India he can point to a CV in human rights work which undermines any suggestion he is racist.
He did not participate in racist chanting and singing and condemns any behaviour supporting that. He accepts he was involved in an incident when a person now known to him as Souleymane S was unable to enter a part of the train.
He has an account to give to police which will explain the context and circumstances as they prevailed at that particular time. In the meantime pending that he wants to put on record his sincerest apologies for the trauma and stress suffered by Mr Souleymane
Mr Barklie's solicitor also said his client was willing to help police with their enquiries.
The victim of an alleged racist attack by Chelsea fans on a Paris Metro train has snubbed the Premier League club's invitation to attend a match at Stamford Bridge.
Manager Jose Mourinho asked if he wanted to attend a game against French champions Paris St Germain on March 11 after expressing his disgust at the fans' behaviour.
But the man, known only as Souleymane, told French newspaper Le Parisien: "I appreciate Mr Mourinho's invitation, but I can't get my head around being in a stadium at the moment."
In the days after the attack, in which Souleymane was pushed off the train as racist abuse was allegedly chanted, he said he was now afraid to ride the Metro.
Police investigating allegations of racism by Chelsea fans on the Paris Metro have identified three men they wish to speak, Scotland Yard say.
It comes after CCTV images of the three men were released on Friday.
Footage showing a black man being pushed off a train in Paris emerged after Chelsea's 1-1 draw with Paris Saint-Germain on Tuesday.
The alleged victim of the racist attack has reportedly declined an invitation from the club to attend a match at Stamford Bridge.
Chelsea fans came together at a match against Burnley today to unite against racism, it follows the incident in Paris where a black man was allegedly pushed off a Metro train by chanting fans.
ITV News Correspondent Neil Connery reports:
A Man City fan holds up a banner at the Etihad urging the authorities to jail the Chelsea fans guilty of racially abusing a black man on the Paris Metro on Tuesday.
The Metropolitan Police are re-appealing for the public's help to identify two men pictured on CCTV following a racist incident involving Chelsea fans in Paris.
Officers now believe they have identified a third man who they had previously released footage of.
Police in London are supporting their colleagues in Paris as the investigation continues.