Former UFC champion Conor McGregor has been charged after he stirred up a melee at the UFC 223 media event at the Barclays Center.

The 29-year-old turned himself into New York police in Brooklyn and was charged with three counts of assault and one count of criminal mischief. Another MMA fighter, Cian Crowley, was also charged with assault and criminal mischief.

Video from the event shows McGregor throwing a hand dolly through the window of a bus:

UFC had to cancel three fights for Saturday's pay-per-view because of injuries caused by the outburst. Lightweight Michael Chiesa was pulled because of facial lacerations and flyweight Ray Borg received multiple corneal abrasions.

UFC President Dana White responded to McGregor's actions:

The UFC put out the following statement:

During today’s media event at Barclays Center to promote UFC 223: Khabib vs. Holloway, Conor McGregor and Artem Lobov entered the building accompanied by over a dozen individuals.

The group, which included McGregor and Lobov, vandalized the vehicle that contained a number of athletes competing at the event taking place this weekend. NYPD was immediately alerted and is currently in the process of investigating the situation. UFC is working very closely with the New York Athletic Commission, Barclays Center security and law enforcement authorities. All parties are working together to ensure the highest standard of proper safety precautions are implemented to protect the fans and athletes.

The organization deems today’s disruption completely unacceptable and is currently working on the consequences that will follow. Immediately, Lobov has been removed from this weekend’s card and individuals involved in the incident are not welcome at tomorrow’s ceremonial weigh-in or Saturday’s event at Barclays Center.”

Read more at ESPN.