Fans of West Ham United and Tottenham have clashed before their Carabao Cup clash on Wednesday evening.
The two sides are set to square off in a London derby at the Tottenham Hotspur Stadium.
Fights broke out outside the ground, with one individual reportedly being knocked out, before coming back round.
The travelling West Ham fans had to be escorted by police to the ground in an effort to avoid any violence.
However there was still a notable clash in the streets outside the 62,000-capacity stadium.
The two teams have a long rivalry with chants ringing out before and after the scenes broke out.
Kick-off was not delayed and fans were able to make their way into the ground.
This is the first game between West Ham and Tottenham in north London since the return of fans, with their clash earlier this season taking place at the London Stadium.
Both teams will be eyeing a place in the last four as they each look to end a long trophy drought.
Tottenham's most recent piece of silverware came in this competition back in 2008 when they beat Chelsea in the final at Wembley.
Antonio Conte is looking to have an instant impact having only arrived in recent weeks.
West Ham meanwhile are enjoying a stronger season, although their form has dipped.
The Italian said in the build-up: “It’s a quarter-final against a really good team, a strong team.
“West Ham showed in the last few years that they are a really good team under David Moyes, and they are doing really well. Our expectation is to have a difficult game against a physical team, and we have to pay great attention in set pieces.
"But, when you reach a quarter-final of a competition, no game can be easy.”
Hammers boss David Moyes said: "I think the good thing is that we are still in every competition going into Christmas time.
"It's a great thing that we've got ourselves in a position where we're in Europe, we're in the quarter-final of the Carabao Cup, we're in a strong position in the league at the moment. So there's a lot of things going into it where we're in a good place."
The contest is being played with a capacity ground as football's doors remain open despite the surge in Covid cases up and down the country.
Tottenham were heavily hit by a spike in cases recently, which forced them to postpone Premier League games.
