No information gained by a custodial interrogation of a child under sixteen (16) years of age nor any evidence subsequently obtained as a result of such interrogation shall be admissible into evidence against the child unless the custodial interrogation about any alleged offense by any law enforcement officer or the Indian Child Welfare Department is done in the presence of the parents, guardian, attorney, adult relative, adult caretaker or custodian of the child. No such custodial interrogation shall commence until the child and the parents, guardian, attorney, adult relative, adult caretaker, or custodian of the child have been fully advised of the constitutional and legal rights of the child, including the right to be represented by counsel at every stage of the proceedings.