You supervise the correspondence unit of the health information services department of a medical center. Today, you received a subpoena duces tecum from an attorney, demanding either the originals or copies of all health records concerning Mary Smith, who allegedly is or was a patient of the medical center. The subpoena lacks sufficient information for you to determine whether Mary Smith is or was a patient in your facility. The subpoena is not accompanied by a valid authorization to release information for Mary Smith, as required in your state. How should you respond to the subpoena?