The Charges

Criminal Sexual Assault
720 ILCS 5/12-13
(a) The accused commits criminal sexual assault if he or she:
(1) commits an act of sexual penetration by the use of force or threat of force; or
(2) commits an act of sexual penetration and the accused knew that the victim was unable to understand the nature of the act or was unable to give knowing consent; or
(3) commits an act of sexual penetration with a victim who was under 18 years of age when the act was committed and the accused was a family member; or
(4) commits an act of sexual penetration with a victim who was at least 13 years of age but under 18 years of age when the act was committed and the accused was 17 years of age or over and held a position of trust, authority or supervision in relation to the victim.
(b) Sentence.
(1) Criminal sexual assault is a Class 1 felony.
(2) A person who is convicted of the offense of criminal sexual assault as defined in paragraph (a)(1) or (a)(2) after having previously been convicted of the offense of criminal sexual assault, or who is convicted of the offense of criminal sexual assault as defined in paragraph (a)(1) or (a)(2) after having previously been convicted under the laws of this State or any other state of an offense that is substantially equivalent to the offense of criminal sexual assault, commits a Class X felony for which the person shall be sentenced to a term of imprisonment of not less than 30 years and not more than 60 years. The commission of the second or subsequent offense is required to have been after the initial conviction for this paragraph (2) to apply.
(3) A person who is convicted of the offense of criminal sexual assault as defined in paragraph (a)(1) or (a)(2) after having previously been convicted of the offense of aggravated criminal sexual assault or the offense of predatory criminal sexual assault of a child, or who is convicted of the offense of criminal sexual assault as defined in paragraph (a)(1) or (a)(2) after having previously been convicted under the laws of this State or any other state of an offense that is substantially equivalent to the offense of aggravated criminal sexual assault or the offense of criminal predatory sexual assault shall be sentenced to a term of natural life imprisonment. The commission of the second or subsequent offense is required to have been after the initial conviction for this paragraph (3) to apply.
(4) A second or subsequent conviction for a violation of paragraph (a)(3) or (a)(4) or under any similar statute of this State or any other state for any offense involving criminal sexual assault that is substantially equivalent to or more serious than the sexual assault prohibited under paragraph (a)(3) or (a)(4) is a Class X felony.
(5) When a person has any such prior conviction, the information or indictment charging that person shall state such prior conviction so as to give notice of the State's intention to treat the charge as a Class X felony. The fact of such prior conviction is not an element of the offense and may not be disclosed to the jury during trial unless otherwise permitted by issues properly raised during such trial.