A group of Arsenal supporters were spotted ripping off Tottenham Hotspur hoardings at White Hart Lane following their side's Capital One Cup third-round win on Wednesday night.
The visiting fans were kept behind after witnessing Arsenal seal a 2-1 victory over their North London rivals.
A small group could be seen tearing down hoardings that displayed Spurs mottos in the away section of the ground.
According to Sky Sports News, an Arsenal spokesman said: "We are concerned that this happened, involving a minority of fans. We will work with Tottenham Hotspur and the authorities on this."
The Metropolitan Police confirmed after the match that 10 people were arrested for numerous offences including criminal damage and assault.
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