Chapter 5.17 INVESTIGATIVE PROCEDURES This chapter is included in your selections. Sections: 5.17.010 Investigative Subpoenas. 5.17.020 Immunity from Self-Incrimination. 5.17.030 Relief from Improper Subpoena. 5.17.040 Subpoena for Personal or Confidential Information About a Victim. 5.17.050 Investigative Hearings.