SoHo Nightclub Brawl Between Chris Brown, Drake Reportedly Over Rihanna

NEW YORK (CBSNewYork) -- New York City police continue to investigate an early morning fight between two of music's superstars.

When it was over, shattered glass littered the the SoHo nightclub, where Chris Brown and Drake reportedly traded punches in a brawl over Rihanna, CBS 2's John Slattery reported.

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Brown apparently wound up with a gash to his chin after bottles were thrown and blows exchanged between his entourage and Drake's crew at W.I.P. on Vandam Street around 4 a.m. Four women and one man were taken to the hospital for minor lacerations, according to the NYPD.

1010 WINS' Juliet Papa reports

The reason for the fight was apparently singer Rihanna, who has dated both Brown and Drake.  CBS 2 has learned that Brown sent a bottle of champaign to Drake's table.  Drake sent it back with a note that Drake has an ongoing relationship with Rihanna, CBS 2's Slattery reported.

Brown posted a photo of his cut chin on Twitter after the alleged fight. The picture was later removed, along with other messages about the fight. In addition to tweeting a photo ,Brown also tweeted some provocative messages, including the following: "How u party wit a rich *** that hate? Lol... Throwing bottles like girls? #shameonya!"

Brown remains on supervised probation after pleading guilty to assaulting Rihanna at a pre-Grammy party in 2009.

No arrests have been made.

Police are looking to question both Brown and Drake to find out how the five people got injured, however, Drake is scheduled to perform in Saratoga on Thursday evening.

Brown is said to be cooperating with police. Drake has declined to speak to police for now, saying he would do so at a time more convenient for both him and his attorney.

Drake's spokesperson issued a statement wearing a Drake shirt saying, "Drake did not participate in any wrongdoing of any kind last night at W.I.P. 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."

Representatives for Brown said he, his girlfriend and friends were the victims of a "brutal assault."