Boxing promoter 50 Cent waits in the ring prior to the super welterweight bout between Canelo Alvarez and James Kirkland at Minute Maid Park on May 9, 2015 in Houston, Texas

Boxing promoter 50 Cent waits in the ring prior to the super welterweight bout between Canelo Alvarez and James Kirkland at Minute Maid Park on May 9, 2015 in Houston, Texas

*A lawyer for rapper 50 Cent said Tuesday that neither the musician nor his security guards robbed a Los Angeles man of jewelry at gunpoint in Las Vegas earlier this month.

Police are investigating a report that a jewelry company owner was robbed early May 2 at or near boxer Floyd Mayweather Jr.’s gym, said Officer Jesse Roybal, a department spokesman.

TMZ reported that LAX Jewelry Co. owner Robert Marin said he met the rapper at a nightclub and was later invited to Mayweather’s gym, where he was pistol-whipped and robbed of a diamond watch and chain valued at some $250,000.

The alleged attack occurred the morning before Mayweather beat Manny Pacquiao at the MGM Grand Garden Arena.

Marin had minor injuries when he flagged down an officer and filed a complaint about 5 a.m., Roybal said. No charges were immediately filed, and Roybal said a police report had not been made public.

Attorney Scott Leemon, representing the rapper whose legal name is Curtis James Jackson III, acknowledged TMZ’s report.

“On behalf of 50, I can adamantly deny that he or his security had anything to do with these baseless and false allegations,” Leemon said in a statement.