Late Thursday, McGregor turned himself in to the New York Police Department although no formal charges had been filed, a spokesman for the agency told the Los Angeles Times.
McGregor, who wasn't on the UFC 223 card, is accused of three counts of criminal mischief, two counts of assault, one count of attempted assault, five counts of menacing and one count of reckless of endangerment, a court document says.
Video footage appeared to show the sport's most famous star throwing a hand truck at a bus full of fighters after a news conference for UFC 223 at Brooklyn's Barclays Center.
"They opened the doors for them, through an entrance, they stormed the building, got down to the loading docks where the fighters were getting on the buses and started to attack the buses, throwing trash cans and dollies and things like that", White said.
The clip also shows the reaction from the fighters on the bus with Michael Chiesa suffering a cut to the head.
However, of all the comments on McGregor, none have been as striking or peculiar as those made by New York State Athletic Commission executive director Kim Sumbler, who compared the fighter to murderous cult leader Charles Manson.
But at the cost of other fighters, it's money.
Another fight was canceled after different fighter inside the suffered an eye injury as a result of the glass particles. Bail was set for Cowley at $25,000. His attack on the bus allegedly targeted UFC fighter Khabib Nurmagomedov.
McGregor and his teammates were not allowed at Barclays Center by the UFC for Saturday's event. It is unclear whether the incident led to McGregor's actions.
McGregor, who was not asked to enter a plea, left the courthouse without saying anything to the media. He's awesome. Conor McGregor is a f***ing unicorn. I think everybody is going to be pretty disgusted with Conor McGregor right now. Tell me to come here, without security, without UFC, without nothing. He just had a kid.
McGregor (21-3) last fought for UFC in November 2016, when he won the lightweight (155-pound) championship, according to Bleacher Report. His last bout was in the boxing ring, when he fought Floyd Mayweather in August 2017.
McGregor's alleged attack on the press event only added to the list of woes for what is widely considered to be one of the most high profile UFC events of the year.