Conor McGregor was arrested in Miami yesterday and charged with strong-armed robbery and criminal mischief.
The MMA star has since been released.
He was arrested after he allegedly smashed a fan's phone outside a hotel.
McGregor was leaving the Fontainbleau Hotel when a fan attempted to take a picture of him on a phone.
He apparently slapped the phone from the victim's hand and stamped on it several times.
Conor McGregor
Following the incident, McGregor was located and arrested by Miami Beach Police.
Police tracked down the MMA star who is on holiday in the Florida city and arrested him after viewing CCTV footage.
Afterwards, he was released on a bail of 12-thousand 500 dollars. As he left police custody he was pictured in a t-shirt that read: 'When I say something is going to happen, it's going to happen. McGregor is back.'