Section 720 ILCS 5/10-3.1 - Aggravated unlawful restraint(a) A person commits the offense of aggravated unlawful restraint when he or she commits unlawful restraint while using a deadly weapon. (b) Sentence. Aggravated unlawful restraint is a Class 3 felony. Amended by P.A. 096-0710,§ 25, eff. 1/1/2010.