(720 ILCS 5/21‑3) (from Ch. 38, par. 21‑3)
(Text of Section from P.A. 97‑184)
Sec. 21‑3. Criminal trespass to real property.
(a) Except as provided in subsection (a‑5), whoever:
(1) knowingly and without lawful authority enters or
remains within or on a building; or
(2) enters upon the land of another, after receiving,
prior to such entry, notice from the owner or occupant that such entry is forbidden; or
(3) remains upon the land of another, after receiving
notice from the owner or occupant to depart; or
(3.5) presents false documents or falsely represents
his or her identity orally to the owner or occupant of a building or land in order to obtain permission from the owner or occupant to enter or remain in the building or on the land;
commits a Class B misdemeanor.