720 ILCS 5/4-1

(720 ILCS 5/4-1) (from Ch. 38, par. 4-1)

Sec. 4-1. Voluntary act.

A material element of every offense is a voluntary act, which includes an omission to perform a duty which the law imposes on the offender and which he is physically capable of performing.

(Source: Laws 1961, p. 1983.)