May 7, 2015 8:00 AM EDT

A Texas woman got more than just granola when she opened a Nature Valley bar.

Tucked inside the wrapper was a small bag of high-quality cocaine, KENS 5 reported.

Cynthia Rodriguez called the San Antonio police about this in March when she found the bag. She initially thought she had won a prize, but after she called Nature Valley the company told her to report the incident to the police.

“It’s a somewhat disturbing case,” Sgt. Javier Salazar told KENS 5. “You think of a child getting a hold of a package that’s got interesting symbols on it, dollar signs in this case, and ingesting something like cocaine that could have a possibly dangerous effect, maybe even deadly on a child.”

The police are now trying to determine if the packet of cocaine was deliberately slipped into the packaging, or if it fell out of someone’s pocket on the assembly line.

Mike Siemienas, spokesman for General Mills, which makes the Nature Valley bars, told KSAT, “We referred this to the police in March and are confident this did not happen in our facility… Inside the production facility the product moves very fast and it would be extremely difficult to get something in there.”

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