Brittany Acosta, 21, said she had repeatedly auditioned for the show in various cities, but was never asked to perform an on-camera audition for judges Jennifer Lopez, Steven Tyler and Randy Jackson, the New York Post reported Monday.
Acosta said she tried to bluff her way to an audition last week in New York by claiming she was next up to see the judges, but she was taken from the convention center by security guards.
"I'm not leaving. This is my dream. My life is ruined," the police report quotes her as shouting while being led away.
Acosta said she was arrested and held for five days. It was unclear whether any charges are being sought against her.
Acosta said the experience has soured her on "Idol" and she is now setting her sights on "The Voice," NBC's "Idol" competitor that counts Christina Aguilera as a judge.
"I'm doing 'The Voice' callbacks," Acosta said.
"I think it's going to be better anyways. Christina Aguilera is from [the Pittsburgh area], so I'd like to compare myself to her, and I love her," she said.