Aurora Medical Center said in a statement obtained by Fox6 that the worker at their Grafton location admitted Wednesday to intentionally removing 57 vials of Moderna’s coronavirus vaccine from a pharmacy refrigerator on Saturday.

“We are more than disappointed that this individual’s actions will result in a delay of more than 500 people receiving their vaccine,” the company said in its statement.

“This was a violation of our core values, and the individual is no longer employed by us.”