delivered the opinion of the court:
Fоllowing a bench trial, defendant Gerard Cooper was convicted of murder (Ill. Rev. Stat. 1985, ch. 38, par. 9 — 1(a)) and was sentenced to 20 years in the Illinois Department of Corrections. On appeal, defendant contends that: (1) he was not proven guilty of murder beyond a reasonable doubt; (2) at most, his conduct constituted involuntary manslaughter; (3) three prior consistent statements of the State’s key witness were erroneously introduced; and (4) the trial court erred in denying his motion for a new trial based on newly discovered evidence. For the reasons set forth below, we affirm.
The record reveals that on August 18, 1984, at approximately 2:30 a.m., three youths, Frederiсk Harris, Larry Gilkey, and Shone Hill, exited a southbound train at the Roosevelt and State subway station in Chicago and were heading toward the stairway when they were approached by another group of boys, one of whom was defendant. Vincent Stepter, who was present at the scene, testified on behalf of the State that defendant flashed gang signs at Harris and then forced Harris to make a gang sign. Thereafter, defendant called for his fellow gang members and proceeded to strike Harris in his head. Hill and Gilkey fled up the stairs, while defendant and another youth named Jeremiah Humphrey pursued Harris down the subway platform. When Harris reached the еnd of the platform and attempted to jump on the tracks, defendant kicked him in his back, causing him to fall on the third rail of the tracks, where he was electrocuted.
Charles Brown, another State witness, testified that he observed Humphrey and defendant chasing Harris. Once Harris reached the end of the platform, Brown saw defеndant swing at Harris. He was uncertain, however, as to how Harris landed on the subway tracks. Similarly, Bryan Hoard testified that he observed defendant chase Harris and hit him on the shoulder, yet he did not see Harris fall onto the tracks. Gilkey and Hill were also unable to see what happened to Harris after they fled up the station stairs.
Defendant’s case was based primarily on the testimony of Owen Lofton, whose presence at the scene was uncorroborated. Lofton stated that while defendant initially participated in the chase of Harris, he ceased when Harris reached the stairway. Lofton further testified that defendant did not kick Harris onto the tracks, but rather Harris slipped and fell on some water. Joel Larkings, the conductor of the train which eventually ran over Harris’ body, stated, however, that he observed no water on the platform or on the tracks. State exhibits of the scene showed no such water as well.
Lofton also attested to meetings on August 18 at Grant Park, August 20 at the “beach,” and August 21 at the 26th and California courthouse, between Stepter, Brown, and several other youths involved in the incident during which Stepter urged them to blame defendant for the offense. Both Brown and Stepter denied the occurrence of these meetings at trial.
Michael Nicholson testified for the defеnse that he did not see defendant chase Harris. Yet, Nicholson had previously submitted a written statement to defense counsel stating that defendant was in fact one of the boys who chased Harris.
After the trial court found defendant guilty of murder, defense counsel presented the court with a motion for a new trial based on nеwly discovered evidence. The motion was denied and defendant was sentenced to 20 years in prison.
On appeal, defendant initially contends that he was not proven guilty of Harris’ murder beyond a reasonable doubt as the testimony of the State’s key witness, Vincent Stepter, was incredible. Specifically, defendant сlaims that Stepter had motivation to lie because he was once a suspect in the case, he had a personal vendetta against defendant stemming from an incident on July 4, 1984, when defendant abandoned Stepter during a fight, and Stepter had received immunity from prosecution in the instant offense as well as had an unrelated robbery charge dropped by the prosecution in exchange for his truthful testimony at trial. Defendant additionally contends that there were numerous inconsistencies between Stepter’s testimony and that of the other witnesses. This argument is without merit.
It is well established that a reviewing court will not substitute its judgment for that of the trier of fаct who heard the evidence and had the opportunity to observe the demeanor of the witnesses absent evidence so palpably contrary to the verdict or so unreasonable, improbable or unsatisfactory as to cause a reasonable doubt of defendant’s guilt. (People v. Adams (1984),
After reviewing the record, we conclude that the evidence is not so palpably contrary to the verdict or so unreasonable, improbable ' or unsatisfactory to justify reversal of defendant’s conviction. In addition to Vincent Stepter, Charles Brown, Bryan Hoard, and defense witness Mike Nicholson all testified that defendant chased Harris at the subway station on August 18. Three of them observed defendant strike Harris. Owen Lofton’s testimony that Harris fell and slipped оn water was refuted not only by State exhibits, but also by Joel Larkings, the conductor of the oncoming train, who stated no water was present on the platform or on the subway tracks. While it is true that Stepter was the only witness who actually saw defendant kick Harris onto the tracks, the positive identification by one credible witness is normally sufficient to sustain a conviction. (People v. Molstad (1984),
With rеspect to the grant of immunity and the agreement to dismiss Stepter’s pending robbery charge, the record indicates that such actions took place after Stepter had already made several statements implicating defendant in the offense. Moreover, Owen Lofton’s testimony that he overheard Steptеr on three separate occasions urge the others to blame defendant for the offense was not only denied by Stepter and Brown, but it also was never corroborated by any defense witness.
Equally unavailing is defendant’s contention that he may not properly be held liable for Harris’ murder under the theory of accountability. In order to hold an individual accountable for the conduct of another, the State must prove beyond a reasonable doubt that: (1) defendant solicited, aided, abetted, agreed or attempted to aid another person in the planning or commission of the offense; (2) this participation must have taken place either before or during commission of the offense; and (3) it must have been with the concurrent, specific intent to promote or facilitate the commission of the offense. (People v. Schlig (1983),
Here, defendant, a member of the “Disciples” street gang, was one in a group of boys that approached Harris and his companions on August 18, and flashed gang signals at them. Defendant also struck Harris and was an active participant in the chase of Harris. Even assuming that defendant withdrew from the chase before he reached the end of the platform as he contends, defendant did nothing to stop the chain of events he helped initiate. Proof that a person was present at the commission of a crime without disapproving or opposing it may be considered by the triаl court in determining whether the defendant abetted the commission of the crime. (People v. Schlig (1983),
Defendant next argues that even assuming defendant did in fact kick Hаrris onto the subway tracks, at most, such actions constituted involuntary manslaughter, particularly since the third rail was 8 feet, 7 inches from the platform edge. Again, we disagree.
Section 9 — 1(a) of the Criminal Code of 1961 defines the crime of murder and provides in part that “[a] person who kills an individual without lawful justification commits murder if, in perfоrming the acts which cause the death *** [h]e knows that such acts create a strong probability of death or great bodily harm to that individual or another.” (Ill. Rev. Stat. 1985, ch. 38, par. 9 — 1(a)(2).) To prove the crime of murder, it is not necessary to show that the defendant has a specific intent to kill or do great bodily harm or that he knows with certainty that his acts will achieve those results. “ ‘It is sufficient to show that he voluntarily and wilfully committed an act, the natural tendency of which was to destroy another’s life.’ ” People v. Bartall (1983),
Here, the “natural tendency” of defendant’s voluntary and wilful action was to destroy Harris’ life. Prior to kicking Harris, defendant flashed gang signs at Harris, struck him in the head, and led a chase of him down the platform. When Harris was cornered at the end of the platform, defendant kicked him in the back onto the subway tracks. At the very least, defendant knew such conduct would result in great bodily harm to Harris, regardless of the location of the third rail, as Harris could have been hit by a train or been seriously injured from the fall. Certainly, this constitutes more than the “reckless” type of conduct necessary for the crime of involuntary manslaughter. Ill. Rev. Stat. 1985, ch. 38, par. 9 — 3(a).
Defendant next asserts that the trial court should have prohibited the prosecutor from introducing Stepter’s prior consistent statements to the policе, assistant State’s Attorney, and the grand jury, and from referring to them in closing and post-trial arguments. While prior consistent statements are generally inadmissible to bolster a witness’ in-court testimony (People v. Clark (1972),
First, there is nothing in the record to indicate that Stepter knew the prosecution would grant him immunity or drop his pending robbery charge when he gave his statements implicating defendant. According to defense counsel’s representation at oral argument, Stepter’s familiarity with the criminal justice system was limited only to his prior arrest for robbery. Second, it is not unusual for a potential witness, particularly one who is out on probation, to be apprehensive abоut becoming involved in a criminal investigation. And finally, unlike the defendant’s accomplices in People v. Green (1984),
Finally, defendant contends that the trial court improperly denied his motion for a new trial based on the potential testimony of an alleged occurrence witness known as “Waldo,” who was located by defendant’s mother after trial. The standard of review for a motion for a new trial оn the ground of newly discovered evidence is that the new evidence must be of such conclusive character that it will probably change the outcome on retrial. (People v. Jones (1987),
Having considered the record in the present case, we conclude that the trial court did not abuse its discretion by denying defendаnt’s motion for a new trial. Defense counsel, through discov-' ery materials tendered approximately eight months before trial, became aware of a potential witness named Edward Anderson, later determined to be “Waldo,” an occurrence witness known by defendant and mentioned in a police report dated August 21, 1984. Contained in those discovery materials were copies of all police reports, as well as Anderson’s statement to the police, his social security'number, and his last known address. While Anderson’s phone had been" disconnected, defendant never attempted to seek out a different number for Anderson, go to the listed address, later found to be Anderson’s father’s residence, or utilize his social security number to determine his place of employment. Under these circumstances, we conclude that defendant did not exercise due diligence in attempting to locate Anderson prior to trial, and the mere fact that dеfendant was not aware Anderson was an occurrence witness did not negate his duty to do so.
People v. Pirovolos (1970),
Furthermore, Anderson’s testimony, as disclosed in his affidavit, that Harris “jumped down onto the tracks” would be merely cumulative of Lofton’s incredible testimony at trial and would not sway the trial court into reaching a different result as there was an overwhelming amount of credible evidence implicating defendant in the offense.
For the foregoing reasons, the judgment of the circuit court of Cook County is affirmed.
Affirmed.
CAMPBELL and MANNING, JJ., concur.
