Police have launched an investigation after footage emerged of a fan allegedly headbutting Roy Keane in a hospitality area at Arsenal's Emirates Stadium, leaving 'blood on the floor'.
Footage shared on social media last night showed Keane's Sky Sports colleague Micah Richards grappling with the man to restrain him, but he had left before security guards arrived.
Today, Sky Sports confirmed Richards had attempted to 'defuse' the situation - as the Met announced it had begun an investigation but had not yet made any arrests.
The 52-year-old former Manchester United captain was confronted by a man at the top of the West Stand as he was waiting for a lift to take him down to the pitchside area, Mail Sport understands.