that the accused was the offender. (7 J. Wigmore, Evidence §2072, at 524 (Chadbourn rev. 1978).) By common acceptation, the first two components — the occurrence of the injury or loss, and its causation by criminal conduct — are termed the
corpus delicti; the identity of the accused as the offender, the ultimate issue, is not considered part of the
corpus delicti. (7 J. Wigmore, Evidence §2072, at 524-25 (Chadbourn rev. 1978); 1 W. LaFave & A. Scott, Substantive Criminal Law §1.4, at 24 (1986); see
People v. Lambert (1984), 104 Ill. 2d 375, 378;
People v. Taylor (1974), 58 Ill. 2d 69, 78;
People v. Norcutt (1970), 44 Ill. 2d 256, 263.) The elements of an offense must, of course, be proved beyond a reasonable doubt.
In re Winship (1970), 397 U.S. 358, 361-64, 25 L. Ed. 2d 368, 373-75, 90 S. Ct. 1068, 1071-73;
People v. Kirilenko (1953), 1 Ill. 2d 90, 94.
“[I]f the independent evidence tends to prove that an offense occurred, then such evidence, if corroborative of the facts contained in the confession, may be considered along with the confession in establishing the corpus delicti. In such event, the independent evidence need not establish beyond a reasonable doubt that an offense did occur.” (Emphasis in original.) People v. Willingham (1982), 89 Ill. 2d 352, 361.