Chelsea have suspended four people from attending matches while an investigation into the alleged racial abuse of Raheem Sterling takes place.
The incident involving the Harlesden-raised Manchester City forward occurred during his team’s 2-0 defeat at Stamford Bridge on Saturday.
Chelsea say they are “fully supporting” an ongoing police investigation.
In a statement, the club said evidence of racist behaviour will result in “severe sanctions, including bans”.
“Chelsea Football Club finds all forms of discriminatory behaviour abhorrent,” the statement continued, adding that the club “will also fully support any criminal prosecutions”.
City have released a statement saying the club “welcomes Chelsea FC’s decision to issue suspensions to the individuals who verbally abused Raheem Sterling during the match at Stamford Bridge on Saturday”.
City’s statement added: “The club and Raheem are fully engaged with Chelsea FC and the investigating authorities as they continue to examine the events in question.
“Manchester City and Raheem are committed to working with all relevant parties and organisations to support the objective of eradicating racism from the game.”
The Professional Footballers’ Association said on Monday that it stood “shoulder to shoulder” with Sterling and believes he is singled out for negative media coverage.