CINCINNATI, Ohio -- An Ohio woman ordered a sandwich at a fast-food restaurant, and it contained crack cocaine, she said.

NewsChannel5's Cincinnati affiliate WCPO reported that what was just supposed to be a quick stop for a couple of fish sandwiches ended up being the catalyst for an undercover police investigation.

"Immediately, I didn't notice it, as a matter of fact I was kind of ravenous, grabbed the sandwich, took a bite, looked down and here's this," she said. "These white clumps of something -- looked like a powdery substance, laying on the paper that the sandwich came wrapped in. I think the majority of it fell out of the paper."

Police said they believe the substance was about 10 grams of crack cocaine. Because of possible retaliation, the woman will not be identified.

"There was quite a bit of it, and I thought well this doesn't belong in a sandwich, this is not part of what I should normally get from Rally's, so I ate the other sandwich and called the police," she said.

Police sent undercover officers to the location where the sandwiches were purchased.

A Rally's employee, Russell Calbert, was arrested.

At this point, he's charged with marijuana possession. Authorities said more charges could be announced in connection with the crack cocaine.

A pretrial has been set for next month.