Chelsea will take the strongest action after 'abhorrent' racist abuse of Son Heung-min

Son was preparing to take a corner when the supporter made the gesture, mocking his Korean ethnicity.

Chelsea have previously given out lifetime bans to anyone found guilty of racist abuse inside the stadium and they maintain their stance following this latest issue.

A club statement reads: "Chelsea Football Club finds any form of discriminatory behaviour totally abhorrent. It has no place at Chelsea or in any of our communities.

"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."

The unsavoury event marred what was a fantastic afternoon of football.

Kalidou Koulibaly put Chelsea ahead in the first half before Pierre-Emile Hojbjerg equalised for a rejuvenated Spurs in the second.

This saw tempers boil over on the touchline, with Blues manager Thomas Tuchel and Spurs boss Antonio Conte nearly coming to blows.

James put Chelsea ahead with 13 minutes to go, but Harry Kane popped up with a head in the sixth minute of added time to ensure the points were shared.

Referee Anthony Taylor was given no choice but to send both men off after booking them for their previous altercation.