WHAT IS THE PURPOSE OF A PRELIMINARY INVESTIGATION?
1. To determine if there is sufficient ground to engender a well-founded belief that a crime has been committed and the respondent is probably guilty thereof, and should be held for trial
2. To protect the accused from the inconvenience, expense, and burden of defending himself in a formal trial unless the reasonable probability of his guilt has been first ascertained in a fairly summary proceeding by a competent officer
3. To secure the innocent against hasty, malicious and oppressive prosecution, and to protect him from an open and public accusation of a crime, from the trouble, expense and anxiety of a public trial
4. To protect the state from having to conduct useless and expensive trials