WATCH NICKI MINAJ CURSE MARIAH CAREY OUT AT "American Idol" auditions

TMZ has posted video of Nicki Minaj swearing at Mariah Carey and threatening, "I'm gonna knock you out."

Minaj derailed the "American Idol" auditions in Charlotte, North Carolina.

In the footage, obtained by TMZ, Nicki shouts, "I told them I'm not f*ckin' putting up with her f**kin' highness over there."

On the video you will hear

Nicki Get this s**t in self control. Get in control. Get in control.
Randy Settle down, settle down
Nicki Don't lose your head. Don't lose your head (inaudible). Don't tell me I'm a gangster.
Nicki (inaudible) every 5 minutes. So every time you patronize me, I'm-ma take it back, and if you've got a f**king problem, handle it.
Nicki I told them I'm not f**kin' putting up with her f**king highness over there. Figure it the f**k out. Figure it out.
Nicki I'm not gonna sit here every f**king minute to have you come down and harass me every minute everyday.

Mariah is talking back at Nicki but it's hard to hear what she's saying.

Producers are worried about Mariah and Nicki co-existing for the long haul.