The petition upon which the Violent Juvenile Offender notice is based shall contain the information and averments required for all other delinquency petitions filed under this Act and its service shall be according to the provisions of this Act.
No prior adjudication shall be alleged in the petition.
Except as otherwise provided in this Section, the provisions of this Act concerning delinquency proceedings generally shall be applicable to Violent Juvenile Offender proceedings.
After an admission of the facts in the petition or adjudication of delinquency, the State's Attorney may file with the court a verified written statement signed by the State's Attorney concerning any prior adjudication of an offense set forth in subsection (a) of this Section that would have been a felony or of any offense that involved dishonesty or false statement had the minor been tried as an adult.
The court shall then cause the minor to be brought before it; shall inform the minor of the allegations of the statement so filed, of the minor's right to a hearing before the court on the issue of the prior adjudication and of the minor's right to counsel at the hearing; and unless the minor admits the adjudication, the court shall hear and determine the issue, and shall make a written finding of the issue.
A duly authenticated copy of the record of any alleged prior adjudication shall be prima facie evidence of the prior adjudication or of any offense that involved dishonesty or false statement.
Any claim that a previous adjudication offered by the State's Attorney is not a former adjudication of an offense which, had the minor been prosecuted as an adult, would have resulted in the minor's conviction of a Class 2 or greater felony involving the use or threat of force or violence, or a firearm, a felony or of any offense that involved dishonesty or false statement is waived unless duly raised at the hearing on the adjudication, or unless the State's Attorney's proof shows that the prior adjudication was not based upon proof of what would have been a felony.
705 ILCS 405/5-820