(a) Any licensee or its officers, employees or agents may question any individual in the casino reasonably suspected of violating any of the provisions of sections 473 through 476 of this title. No licensee or its officers, employees or agents shall be criminally or civilly liable by reason of any such questioning.
(b) Any licensee or its officers, employees or agents who shall have probable cause for believing there has been a violation of sections 473 through 476 of this title in the casino by any person may refuse to permit such person to continue gaming or wagering or may take such person into custody and detain him in the establishment in a reasonable manner for a reasonable length of time, for the purpose of notifying law enforcement or commission authorities. Such refusal or taking into custody and detention shall not render such licensee or its officers, employees or agents criminally or civilly liable for false arrest, false imprisonment, slander or unlawful detention, unless such refusal or taking into custody or detention is unreasonable under all of the circumstances.
(c) No licensee or his officers, employees or agents shall be entitled to any immunity from civil or criminal liability provided in this section unless there is displayed in a conspicuous manner in the casino a notice in bold face type clearly legible and in substantially this form: