A 42-year-old man has been arrested on suspicion of assault after football pundit Roy Keane was reportedly headbutted at Arsenal’s home ground the Emirates Stadium.

Footage was posted on social media of fellow Sky Sports pundit Micah Richards pinning a man against a wall in the moments after the alleged assault on Sunday.

The Metropolitan Police refused to identify anyone involved in the incident, but issued a statement that said: “Police are investigating an incident at Emirates Stadium on Sunday, 3 September, during which a man was assaulted.

“On Monday, 4 September, a 42-year-old man was arrested on suspicion of assault (ABH). The man has been taken into police custody.

“Enquiries are ongoing.”