The 'America's Got Talent' host acted as DJ at the Maxim Celebrates the Launch of Assassin's Creed III event in Hollywood on Wednesday (24.10.12) and onlookers claimed he didn't respond to a request to play Nicki's 'Starships', most likely because of the recent feud between her and his wife Mariah Carey.
A source told People: ''Nick hyped up the party by playing songs including ones by Carly Rae Jepsen and One Direction. The crowd was loving the music and Nick was dancing!
''A guest approached to request that he play Minaj's 'Starships' but he acted like he didn't hear the request. Clearly he was supporting his wife during her feud.''
Filming of the new series of 'American Idol' was called to a halt earlier this month after the judges' disagreement over a contestant turned into a bitter screaming match as Nicki hurled insults at Mariah.
However, producers have insisted the show must go on despite the tension and pledged their support for the entire judging panel.
In a statement, 'American Idol' producers said: ''This is one of the best, most passionate, dynamic and invested judging panels we've ever had.
''We love and support all of the judges and the fantastic work they are doing, and we can't imagine a better group to find the next 'American Idol'.''