The club said on Thursday that Chelsea played against Tottenham

Alleged during last weekend's Premier League match

An investigation into an incident of racist abuse has begun.

Tottenham forward Son Heung-min was allegedly abused by a supporter

While he took a corner during the second half of the 2-2 draw on Sunday.

This man will face the strongest possible action from the club," Chelsea said of the supporter.

Chelsea said it finds any form of discriminatory behavior "absolutely abhorrent".

The club said: "Chelsea have consistently expressed their views on discriminatory behavior

have made the situation very clear yet still, there are such idiots

who associate themselves with this club as so-called 'fans',

Which embarrasses our coach Chelsea. Players, staff and our true supporters."