Micah Richards asked about alleged Roy Keane 'headbutt' incident as Alan Shearer jokes

Micah Richards has been asked about an alleged 'headbutt' on Roy Keane by a man during the match between Arsenal and Manchester United on Sunday.

Police have launched an investigation into the alleged incident, with the Daily Mail reporting on Sunday evening that it occurred while Richards and Keane were leaving the Sky Sports studio at the Emirates Stadium in order to walk down to the pitch.

According to a witness, a man allegedly headbutted Keane, hitting him on the chest and the chin. The Athletic add that, as per witnesses, Keane was 'startled', but did not react in an aggressive way and remained 'ultra professional'.

Footage shared on social media appeared to show Richards in an altercation with the man. Sky Sports confirmed that the former Manchester City defender intervened to 'defuse the situation'.

The Metropolitan Police confirmed on Monday afternoon that, during investigations into an incident at the Emirates Stadium, a 42-year-old man has been arrested on suspicion of assault. He has been taken into police custody.

On 'The Rest Is Football' podcast with Gary Lineker and Alan Shearer, also released on Monday afternoon, Richards was asked for comment.

At this stage, with the alleged incident under a police investigation, the Sky Sports and BBC pundit was unable to comment, stating: "Oh my word. Gary, I'm not allowed to talk about it [because it's under police investigation]. Exactly that.

"But when I'm allowed to talk about it, 'The Rest Is Football' will be the first to hear about it."

Shearer, however, couldn't avoid a quip about the alleged incident, exclaiming: "I think the common opinion is, don't f**k with big Meeks! Flex the guns, Micah!"

Lineker went on to explain why the incident cannot currently be covered in more detail on the podcast: "There was an incident at Arsenal yesterday [Sunday] where Roy Keane was allegedly headbutted by someone and a certain Micah Richards stepped in.

"We'll get the full story at some point. It's something we shouldn't trivialise either, really, because that's a serious thing if fans start attacking people.

"We'll wait until the police investigation is done before we cover that story even more."

More to follow.

This is a breaking news story from the team at SPORTbible and will be updated in due course. In the meantime, please follow us on our various social channels for the latest information on this story. You can find the latest SPORT news on Twitter, Facebook and Instagram. Stay tuned for the latest and follow all the latest developments below.