Roy Keane and Micah Richards were seen in a confrontation after Manchester United's match with Arsenal.
The former Premier League players were covering the game as pundits for Sky Sports yesterday (3 September).
However, after the match, there appears to have been an incident at the Emirates stadium in London, where it had been played.
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Footage shared on social media shows ex-Manchester City defender Richards grabbing hold of another man's shirt.
In the very short clip, Keane, who is standing beside Richards, is also seen speaking to the individual.
It's not clear what sparked the apparent confrontation, or what happened after, but the police have now confirmed they have launched an investigation.
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In a statement, the Metropolitan Police said it was looking into the matter, and that there had been no arrests as yet.
"Police are investigating following an assault that is alleged to have occurred at the Emirates Stadium during an Arsenal v Manchester United match on Sunday, 3 September," a spokesperson for the force said.
Sky Sports also released a statement after the footage began doing the rounds on social media.
The broadcaster defended Richards, claiming he was trying to calm the situation down.
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A spokesperson said: "We understand the police are investigating an alleged assault by a member of the public immediately preceding the footage circulating on social media.
"In the footage seen, Micah Richards was acting to diffuse a situation."
LADbible has contacted the Met Police for further comment.
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Keane and Richards were part of the SkySports team covering United's clash with Arsenal, working alongside Gary Neville, Theo Walcott, and presenter David Jones.
The match was a pretty cagey affair, with Marcus Rashford putting United 1-0 up in the first half with a great strike.
However, just a minute after he netted the opener, Arsenal midfielder Martin Odegaard scored to put the two sides level again.
United thought they had won the match late on, with new signing Rasmus Hojlund putting Alejandro Garncho through against the keeper.
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However, a VAR check revealed that the break away was offside, and the goal was ruled out.
Minutes later, Arsenal went 2-1 up with a goal from Declan Rice before striker Gabriel Jesus rounded things off for the Gunners.
The win puts Arsenal in fifth spot, while United fall down to 11th spot, having won two and lot two of their opening four fixtures.
Dominic Smithers