Former footballers Micah Richards and Roy Keane were involved in a confrontation with a fan at Arsenal's clash with Manchester United on Sunday.

Ex-England and Manchester City defender Richards was working as a Sky Sports studio pundit at the Emirates, alongside Keane, Gary Neville and Theo Walcott.

The video shows Richards trying to calm things down and appearing to restrain an unidentified man, who had allegedly aimed a headbutt at Keane and attempted to strike him on the chest and chin, police have now launched an investigation over.

A man wearing a suit is then seen trying to separate the pair before Keane moves across and also appears to grab the male's shirt.

It is unclear when the incident took place although the former players are seen in the same clothing they wore for Sky's Super Sunday programme.

Richards is seen wearing a black backpack while Keane, 52, has a jacket in his hand during the incident. The duo had been on air until 7.30pm in North London on Sunday evening when Sky's coverage ended.

Met Police statement confirmed it had launched an investigation but there had been no arrests, with enquiries ongoing.

A statement read: "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 Sky Sports told Mirror Football: "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."

Richards, 35, retired from football in 2019 after spells with Manchester City, Fiorentina and Aston Villa before embarking on a successful punditry career.

The incident happened towards the end of the game after Alejandro Garnacho looked to have won the match for United in the 88th minute before VAR ruled the goal out.