The set for American Idol continues to get hot. Nicki threatens Mariah and Mariah says she felt unsafe.

In an interview with Barbara Walters, Mariah discusses the confrontation with here fellow judge Nicki Minaj. Mariah says, "It felt like an unsafe work environment…Anytime anybody's reeling threats at somebody, you know, it's not appropriate…I'm a professional - I'm not used to that type of environment."