VIDEO: UFC star Conor McGregor charged after attack on bus carrying other fighters

NEW YORK CITY -- Ultimate Fighting Championship star Conor McGregor has been charged with assault, police say, over allegations that he and others attacked a bus carrying UFC fighters after a media-day event Thursday in New York City.

The incident, at the Barclays Center in Brooklyn, left at least two athletes injured and unable to fight in Saturday night's UFC 223, set to be held at the same arena, UFC said.

McGregor, who wasn't on the UFC 223 card, was arrested and charged with three counts of assault and one count of criminal mischief, the New York Police Department said.

McGregor is accused of throwing something through the window of a bus, injuring a passenger, according to an NYPD source with knowledge of the event. Video from TMZ Sports shows someone picking up a two-wheeled dolly and throwing it into a bus window, smashing the glass.

A second mixed martial arts fighter, Cian Cowley, was also charged with one count of assault and one count of criminal mischief, police said. Cowley allegedly threw a chair at the bus.

CNN could not reach McGregor's team for comment. McGregor is expected to appear in court Friday.

UFC heavyweight champion Stipe Miocic, of the Cleveland area, tweeted:

McGregor had 'beef' with fighter, UFC president says

McGregor and his entourage of about 20 people were let into the arena through a door during a media-day event by someone affiliated with a credentialed website, UFC president Dana White told the website MMAjunkie.

The group went down to the loading dock where some fighters who were to participate in Saturday's event were getting on buses.

McGregor's group attacked a bus using trash cans, metal barricades and the dolly, White said.

"This is the most disgusting thing that has ever happened in the history of the company," White told MMAjunkie, adding later, "This was a real bad career move for him."

White said McGregor had "some sort of beef" with fighter Khabib Nurmagomedov, who was on the bus and is scheduled to fight Saturday for the lightweight title that McGregor had vacated.

Two fighters injured; three bouts canceled

Two fighters were injured in the bus attack, UFC has said, and their UFC 223 bouts have been canceled.

Lightweight fighter Michael Chiesa and suffered head and facial cuts from broken glass, White told MMAjunkie. Chiesa later said on Twitter that the New York State Athletic Commission determined he would not be allowed to fight on Saturday.

Flyweight Ray Borg, who was scheduled to face Brandon Moreno, is also unfit to fight due to multiple corneal abrasions, according to the UFC.

"The organization deems today's disruption completely unacceptable and is currently working on the consequences that will follow," UFC said in a statement.

UFC's statement also alleges featherweight fighter Artem Lobov was in McGregor's entourage during the attack.

It said Lobov has been removed from his scheduled bout Saturday against Alex Caceres "due to Lobov's involvement in the incident." The UFC did not elaborate on what that involvement entailed.

ESPN reported that Lobov, a teammate of McGregor's, had been involved in a minor scuffle this week with Nurmagomedov at a hotel.

Despite the three bout cancellations, "UFC 223 will proceed ... with 10 bouts," the UFC said. "Moving to the Pay-Per-View main card is the featherweight bout between Zabit Magomedsharipov and Kyle Bochniak."

McGregor (21-3) last fought for UFC in November 2016, when he won the lightweight (155-pound) championship, according to Bleacher Report.

Nurmagomedov is fighting for the lightweight title Saturday, after White said earlier this week McGregor would no longer be permanent champ, according to the Washington Post.

McGregor last competed eight months ago, losing to undefeated Floyd Mayweather in a boxing match that reportedly paid Mayweather more than $100 million and McGregor at least $30 million.