Rap newcomer MIMS has denied reports he issued a challenge to 50 Cent, insisting the statements are "false".
The star, whose debut single This Is Why I'm Hot reached number one in the US, was last week alleged to have called 50 Cent "jealous" and insisted he "should be worried" about his new chart rival's success.
But the rapper, born Shawn Mims, is adamant his comments were misconstrued, because he has always "spoken highly" of the In Da Club hitmaker.
He tells SOHH.com: "It has come to my attention that rumors of me making certain statements about 50 Cent are circulating the internet throughout the US. Basically, without getting into details, these statements are false.
"Every interview I've been in I (sic) actually spoken highly of 50 Cent. I've made remarks saying I respect his work and his ambition and also his business methods. I also made a comment saying that I believe his next album is going to be his best one yet.
"I don't know 50 Cent personally, nor do I know what his worries are. So it isn't my business to comment on that. I'm not sure where certain statements come from... but simply not from my mouth."