Conor McGregor is being brought to a New York court in handcuffs to face assault charges.
It's after an incident at a UFC event last night, where a bus was damaged and a fighter was injured.
McGregor has been charged with three counts of assault and one count of criminal mischief.
25 year old Dublin MMA fighter Cian Cowley with an address at Hyde Park in Dalkey has also been charged in relation to the incident.
We've been asking what you think about McGregor's actions: