The incident in question reportedly took place at The Marble Arch Pub in Dublin, Ireland on April 6, following a dispute about his Proper No. 12 Irish Whiskey. According to TMZ Sports, an elderly man at the bar turned down a shot of the whiskey just moments before McGregor hit him in the head with a left hand.

The 34-year old UFC star has not fought since his scrap with Khabib last October, though there are reports that he'll be back in the octagon before long. Khabib, meanwhile, is gearing up to fight interim Lightweight champion Dustin Poirier in Abu Dhabi on September 7.