UFC star Conor McGregor is now reportedly in custody in New York City, where NYPD officials are expected to formally charge him with assault.

McGregor is reportedly at the 78th Precinct NYPD station in Brooklyn, according to NBC News, citing “two senior New York City law enforcement officials” as their source.

The former UFC dual-weight champion is said to have handed himself in to police officials at the station house, after being named as a person of interest in an on-going investigation into the incident that occurred backstage at this morning’s UFC 223 press event.

Footage captured by bystanders and victims shows what appears to be McGregor hurling a hand truck through a window of a departing bus, which was carrying a selection of UFC fighters and their associated crew. Fighters Michael Chisea and Ray Borg received cuts and abrasions as a result of the attack, with both being forced to withdraw from their planned fights at UFC 223 this weekend.

UFC boss Dana White also removed Artem Lobov, a friend and sparring partner of McGregor, from the card over his involvement in the fracas.

Police in New York asserted that no charges have been formally laid at this time, and the investigation into the incident remains open.

UFC officials have made it clear that Conor, and his crew, are not welcome at tomorrow’s ceremonial weigh-in, nor at fight event itself.

Earlier, White labelled the incident the most despicable event in UFC history.

Image: Getty Images / Ethan Miller