Son Heung-min, a forward for Tottenham, allegedly received racial insults at Stamford Bridge, prompting Chelsea to launch an investigation and warn the “strongest measures.”
A spectator is accused of abusing the South Korean international during Sunday’s heated match, which ended 2-2.
Chelsea has already given life bans to fans who engaged in similar behaviour.
As part of the club’s effort to end abuse, information on how to report instances are now printed on the back of every seat at Stamford Bridge.
“Chelsea Football Club finds any form of discriminatory behaviour totally abhorrent. It has no place at Chelsea or in any of our communities,” said a Chelsea statement.
“Chelsea FC has consistently made its zero-tolerance position on discriminatory behaviour very clear, yet there are still idiots like this that attach themselves to this club as so-called ‘fans’, which shames Chelsea FC, our coaches, players, staff and our true supporters.
“We are investigating this incident and, if identified, this individual will face the strongest action from the club.”
