Rumor has it, NICKI MINAJ threatened to KILL MARIAH CAREY during her wild tantrum on the "American Idol" set on Tuesday. Supposedly, she said, quote, "If I had a gun, I would shoot her." But "Idol" producer NIGEL LYTHGOE says that's "absolute rubbish."
In the video of NICKI MINAJ'S tantrum on the set of "American Idol", it sounds like she "threatens" MARIAH CAREY by saying, quote, "Off with your head! Off with your head!"
--That doesn't seem all that serious, but supposedly it got a little MORE serious.
--Sources tell TMZ that Nicki also said, quote, "If I had a gun, I would shoot her." (!!!) That part was not in the video.
--But NIGEL LYTHGOE wants everyone to chill out. He insists that Nicki did NOT threaten to murder Mariah. He says, quote, "[That's] absolute rubbish. It's absolutely not true in any way, shape or form."
--Nigel adds that Mariah confronted Nicki yesterday to ask if she said that . . . and Nicki said she did not. For what it's worth, TMZ also has a "source close to Nicki" that says it's B.S.
RELATED COMEDY: Nicki Minaj blew up at Mariah Carey during an "American Idol" audition. She got so upset, bystanders were afraid she'd pop a breast implant.