§ 733. Persons who may originate proceedings. The following persons
may originate a proceeding under this article:

(a) a peace officer, acting pursuant to his special duties, or a
police officer;

(b) the parent or other person legally responsible for his care;

(c) any person who has suffered injury as a result of the alleged
activity of a person alleged to be in need of supervision, or a witness
to such activity;

(d) the recognized agents of any duly authorized agency, association,
society or institution; or

(e) the presentment agency that consented to substitute a petition
alleging the person is in need of supervision for a petition alleging,
that the person is a juvenile delinquent pursuant to section 311.4.