NEW YORK, NY (CNN) — Chris Brown suffered a nasty cut on his chin during what his rep called a "brutal attack" at a New York nightclub early Thursday.
Brown, his model girlfriend Karrueche Tran and other friends "sustained several injuries," Brown rep Jeff Raymond said. "Chris and his party are cooperating with New York authorities who are pursuing this incident further."
A New York Police spokesman confirmed the department was investigating the incident.
Brown did not name names, but he did post a photo of his injury -- which appeared to be a half-inch gash on the left corner of his chin -- on his Instagram account.
What happened in the VIP section of the South Village club W.i.P. is unclear.
While Drake was there, his rep denied online reports that it was a clash between members of his entourage and Brown's crew.
"Drake did not participate in any wrongdoing of any kind last night at W.i.P.," his rep said in a statement to CNN. "He was on his way out of the club when the altercation began. He did not engage in any activity which resulted in injury to person or damage to property."
Meek Mill, another rapper named in the online reports, also distanced himself from the brawl. While Mill's rep declined comment to CNN, the artist tweeted "It wasn't me."
Brown, in a tweet of his own Thursday afternoon, appeared to support Meek Mill's claim.
"Me and @MeekMill ain't on that bulls**t. Real respect Real...."
Brown is on probation for another two years, until 2014, the result of his guilty plea to assaulting Rihanna on the eve of the 2009 Grammy Awards.