The New York Police Department just confirmed the news shortly before 11 PM ET, and Newsday’s Mark La Monica has the official statement.
Per NYPD spokesman: "Mr. McGregor is in the custody of the New York Police Department. No formal charges have been filed and our investigation is ongoing."— Mark La Monica (@LaMonicaMark) April 6, 2018
Follow-up reports say that McGregor surrendered to authorities, and that he’s expected to be charged with assault.
McGregor can clearly be seen on video picking up a dolly and throwing it at a bus window, causing the glass to shatter. Lightweight Michael Chiesa wound up with facial lacerations, and flyweight Ray Borg had particles of glass affect one of his eyes. Supposedly the decision to attack the bus stemmed from a previous altercation between headliner Khabib Nurmagomedov and Artem Lobov, who is a friend and teammate of McGregor. Khabib was inside the bus, but he appears to be okay.
McGregor and Artem Lobov have since been banned from attending UFC 223, with Lobov obviously outright removed from his prelim fight vs. Alex Caceres. In addition to the cancellation of Lobov vs. Caceres, Chiesa’s bout vs. Anthony Pettis is off, as well as Ray Borg’s against Brandon Moreno. In effect, what transpired on Thursday reduced this Saturday’s card by roughly 25%.