UFC star Conor McGregor is facing assault and felony criminal mischief charges after allegedly attacking a bus full of fellow fighters at Barclays Center Thursday night.

Video footage shows McGregor and his entourage throwing chairs and other objects at the bus after a news conference for UFC 223, breaking windows and injuring two fighters on board. It is unclear what led to the rampage.

Both injured fighters were pulled from their scheduled UFC matches this weekend.

"The organization deems today's disruption completely unacceptable and is currently working on the consequences that will follow," UFC said in a statement. "Individuals involved in the incident are not welcome at tomorrow's ceremonial weigh-in or Saturday's event at Barclays Center."

McGregor was released on a $50,000 bond and is expected back in court on June 14.

Fighter Cian Crowley also turned himself into the police and is expected to appear in court Friday.

MORE: UFC star McGregor facing criminal charges in New York

UFC President Dana White said Friday he spoke to McGregor via text and the brawler said the confrontation "had to be done."

"It was probably the worst conversation we ever had," White told FS1's "First Things First" on Friday morning. "It's not that I don't think he understood what happened. He justified it. It was justified to him."

White said the 29-year-old McGregor said he was sorry about the fighters who were injured, but, "this had to be done."

It is unclear if UFC President Dana White will permit McGregor to return to the ring.

AP Wires contributed to this report.