New York police have arrested Dominick Diorio, 40, in the alleged assault of Los Angeles Clippers owner Donald Sterling’s ex-mistress, V. Stiviano.

Diorio, a resident of Old Bethpage, New York, was arrested Tuesday on four charges, including assault as a hate crime and aggravated harassment, Newsday reports. He surrendered to authorities on Long Island, who then transferred him into NYPD custody.

The Long Island resident was one of two men accused of punching Stiviano in the face Sunday outside of the Gansevoort Hotel in New York City. The second suspect remains at large.

Stiviano’s attorney, Mac Nehoray, said in a statement that the two men yelled racial slurs at his client, who is of African-American and Mexican descent, as she left the posh hotel's restaurant on Sunday night. One of the suspects allegedly punched Stiviano in the face, then yelled, “I am going to slaughter you,” before striking her again as she attempted to flee in a taxi.

"On behalf of Ms. Stiviano, we would like to express our gratitude to the NYPD Hate Crimes Task Force for acting with utmost courtesy, professionalism and swiftness," Stiviano's attorneys said in a statement, via ESPN. "We know that many in the news media have access to and have been able to communicate directly with Ms. Stiviano. We now request that in light of the pending criminal matter and in an effort to not taint the proceedings, that Ms. Stiviano not be contacted directly and that all media requests be forwarded to her attorneys Mr. Mac Nehoray and/or Ms. Alaleh Kamran."

The NYPD declined to reveal the nature of Diorio’s alleged comment, but confirmed that they were “racial in nature.”

On Tuesday, Nehoray provided exclusive photos to the Daily Mail which revealed the extent of Stiviano’s injuries. The 31-year-old suffered severe swelling and bruising to the right side of her face; the injury extends from her ear to her chin. Nehoray said a doctor found Stiviano to be “banged up but okay.”

In April, Stiviano’s recording of a phone conversation in which Sterling made derogatory comments about African-Americans led to NBA Commissioner Adam Silver’s decision to ban the 80-year-old from the league for life and force the sale of his franchise. Sterling’s wife, Shelly, last week sold the Clippers to former Microsoft CEO Steve Ballmer for $2 billion, pending league approval.