McGregor and his entourage stormed the Barclays Center following UFC 223 media day in Brooklyn on Thursday and caused a wild scene that left one individual — lightweight contender Michael Chiesa — with a laceration. Chiesa is scheduled to fight Anthony Pettis on Saturday night. At the moment, the severity of his injury is unclear.
MMA Fighting’s Ariel Helwani reported that McGregor’s team ultimately attacked a van filled with fighters just as it was departing the arena, banging on the vehicle and throwing chairs through a window. Video shot by fighters onboard shows McGregor ordering an unidentified individual to get out of the van before being taken away by security, Helwani reported.