Footage circulating on social media appears to show the aftermath of the incident in which former Manchester City player Micah Richards – who was on punditry duty alongside Keane for Sky Sports during Uniteds 3-1 loss to Arsenal – is seen restraining a man alongside an unhappy-looking Keane.
No arrests have yet been made but police enquiries are ongoing. Sky has confirmed both Richards and Keane have made statements to officers.
A statement from the Metropolitan Police said: Police are investigating following an assault that is alleged to have occurred at the Emirates Stadium during an Arsenal vs Manchester United match on Sunday, 3 September.
“There have been no arrests. Enquiries are ongoing. Any witnesses or those with information are asked to call 101 ref CAD 6961/3 Sept.”
In a statement to the Daily Mail, Sky told the Daily Mail: &aposWe 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 defuse a situation.