Mixed martial arts fighter Conor McGregor has turned himself in to police after an altercation at a UFC media event in New York.
The Irish fighter gatecrashed the event on the day he was stripped of his world lightweight title.
Footage appeared to show him trying to throw a railing and chairs at a bus carrying other fighters.
UFC president Dana White called it “one of the most disgusting things” that had happened in the sport’s history.
In an interview with ESPN, White said he believed McGregor and “20 guys” got into the Barclays Center in Brooklyn, where UFC fighters were boarding a bus after a news conference.
Footage appeared on the Instagram story of undercard fighter Felice Herrig with the caption: “Conor McGregor causing trouble”.
The NYPD later said McGregor was wanted for questioning before he turned himself in.
He has not been charged and investigations are ongoing, police say.
Conor McGregor was stripped of his UFC 155-pound championship title on Thursday.
The Irishman has not defended the title since winning it in November 2016.
He tweeted a short statement on Twitter saying: “You’s’ll strip me of nothing you’s do nothing”.