McGregor, 29, unexpectedly showed up at a UFC 223 media event Thursday at Barclays Center, and was caught on camera throwing a hand dolly through the window of a bus that was carrying UFC fighters. McGregor was arrested later Thursday.

Lightweight Michael Chiesa (14-3) was pulled from a scheduled bout against Anthony Pettis because of facial lacerations. Flyweight Ray Borg (11-3) has been forced out of a bout against Brandon Moreno because of multiple corneal abrasions. Both injuries were allegedly caused by McGregor's actions.

And McGregor's own teammate, Artem Lobov (13-14-1), was pulled from his fight against Alex Caceres at the event because of his participation in the incident. Earlier this week, Lobov was involved in a minor hotel scuffle with UFC lightweight Khabib Nurmagomedov, who is scheduled to fight Saturday against Max Holloway.

"A decision was made by the New York State Athletic Commission to pull me from UFC 223," Chiesa wrote on Twitter. "I'm devastated to say the least. [Pettis], I hope to run this match up ASAP, June 9 in your backyard. That's all I have to say for now. Much love."

UFC president Dana White condemned McGregor's behavior Thursday, calling it "the most disgusting thing that has ever happened" in UFC history. White said credentialed journalists from McGregor's website, The Mac Life, let McGregor and a large entourage into Barclays Center.

In an official statement Thursday evening, the UFC stated, "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."

UFC 223 will proceed as scheduled with ten bouts. Moving to the main card is the featherweight bout between Zabit Magomedsharipov and Kyle Bochniak.