Mayo Clinic is facing a lawsuit in U.S. District Court over allegedly threatening to fire a security guard for not wanting to get the COVID-19 vaccine due to his religious beliefs.

The lawsuit filed Thursday claims that the Rochester-based health care system refused to grant a security guard’s request for a reasonable religious accommodation to its mandatory COVID-19 vaccination policy.

The U.S. Equal Employment Opportunity Commission filed a lawsuit on July 31 in the U.S. District Court of the District of Minnesota.