730 ILCS 5/5-8A-4.1: Escape.

(a) A person charged with a felony, or charged with an act which, if committed by an adult, would constitute a felony, conditionally released from the supervising authority through an electronic monitoring or home detention program, who knowingly escapes or leaves from the geographic boundaries of an electronic monitoring or home detention program with the intent to evade prosecution is guilty of a Class 3 felony.

(b) A person charged with or convicted of a misdemeanor, or charged with an act which, if committed by an adult, would constitute a misdemeanor, conditionally released from the supervising authority through an electronic monitoring or home detention program, who knowingly escapes or leaves from the geographic boundaries of an electronic monitoring or home detention program with the intent to evade prosecution is guilty of a Class B misdemeanor.

(c) A person who violates this Section while armed with a dangerous weapon is guilty of a Class 1 felony.