Do as I say, not as I do.

That could be the mantra of Bloomingdale's security boss, Alice Butler, who was arrested after allegedly passing off fraudulent bills at the chain's flagship store in New York.

Part of Butler's job was to teach employees how to detect counterfeit money.

According to a report in the New York Post, Butler, 56, who has worked at the store for 17 years, passed out a pair of faux $100 bills while loading money onto her employee debit card on July 1. The cashier - whom Butler had personally trained - noticed that the images on the ink were off-color and that the bills were blurry. She called security, which called New York police. A Secret Service agent was also brought in to verify that the bills were fake, the Post said.

Paul Sakuma/AP Photo

Butler, who lives in New Jersey, was later arrested and released without bail on charges of petit larceny and forgery.

Butler's lawyer, Mark Macron, insisted she is innocent. "She says that she did nothing wrong and that the allegations are a mistake," Macron told ABC News, adding that Butler has no prior criminal record. "The attorney general and I are discussing a non-felony, non-jail plea disposition."

Bloomingdale's remained tight-lipped. "We do not comment on pending litigation," said Bloomingdale's spokesperson Anne Keating.