If a petition filed under Section 3-503 alleges that the conditions set out in subsection 3-504 (d) exist within a facility, the court may set the matter for hearing at the earliest possible time. The petitioner shall notify the licensee, administrator of the facility, or registered agent of the licensee prior to the hearing. Any form of written notice may be used. A receivership shall not be established ex parte unless the court determines that the conditions set out in subsection 3-504 (d) exist in a facility; that the licensee cannot be found; and that the petitioner has exhausted all reasonable means of locating and notifying the licensee, administrator or registered agent.