Police arrest teenage fan over abusive language during Spurs-Chelsea tie

London's Metropolitan Police have arrested a 17-year-old male for a "racially aggravated public order offence" during the first leg of the League Cup semi-final between Tottenham Hotspur and Chelsea at Wembley, a force statement said.

It was understood the language used was allegedly anti-Semitic. "Police have arrested a 17 year old male for a racially aggravated public order offence at tonight's @SpursOfficial v @ChelseaFC," said a statement from the Met Police's Football Unit on Twitter.

"The male is currently being dealt with at a North London police station." The arrest took place at approximately 7.40pm local time (1940 GMT), some 20 minutes before kick-off.

Before Tuesday's match, both London clubs warned fans about their behaviour.

Chelsea supporters have been under the spotlight in recent weeks after a number of high-profile incidents, including a derogatory chant about Spurs supporters that featured alleged anti-Semitic language at a Europa League match in Hungary last month.

"Historically, a small minority has used the Tottenham fixture as licence to use anti-Semitic chants, noises and gestures," said a statement from Chelsea, whose Russian owner Roman Abramovich is himself Jewish.

"Our position is clear -- this is no excuse for abusive chanting or behaviour and it will not be tolerated."