Ill. Admin. Code tit. 86, § 3000.155 – Investigatory Proceedings

a) The Administrator, when necessary, may conduct proceedings for the purpose of investigating an applicant or application, a licensee or third party for an alleged violation of the Act, Board Rules, or the conduct of Gaming on a Riverboat Gaming Operation.
b) The Administrator may require an applicant, licensee or a key person of a licensee to testify or to produce relevant documents, records or other materials at a proceeding conducted under this Rule.
c) The Administrator may issue subponeas for the attendance of witnesses or subponeas duces tecum for the production of relevant documents, records or other material at a proceeding conducted under this rule.
d) All testimony at proceedings conducted under this Rule shall be given under oath or affirmation.