A 23-year-old man is under police investigation after being arrested on suspicion of using anti-Semitic language prior to Tottenham’s 1-0 win over Chelsea in the Carabao Cup semi-final first leg on Tuesday.
He was one of three people arrested at Wembley on suspicion of a racially aggravated public order offence.
The other men, aged 17 and 20, have been released with no further action.
The 23-year-old has been released while investigations continue.
Both clubs had warned supporters about their behaviour before the match, but it is unknown whether the men arrested were Tottenham or Chelsea fans.
The arrest comes days after a Chelsea fan was fined £965 and banned from attending football matches for three years after being found guilty of homophobic chants.
Last month, Chelsea suspended four supporters from attending matches while an investigation into the alleged racial abuse of Manchester City forward Raheem Sterling takes place.
Also in December, Chelsea condemned a vocal minority of their fans for anti-Semitic chants during a Europa League match with MOL Vidi in Hungary.
A fourth man, aged 30, was arrested on suspicion of possession of Class A drugs and has been given a police caution.