delivered the opinion of the court:
A six-count delinquency petition was filed against Twanda Lynn Kirby, a minor. The trial court entered a finding of delinquency on one count and dismissed the other five. The minor appeals, raising the issue of reasonable doubt, and we reverse.
The petition arose from an attack on Celeste Thome and Debbie McDonald as they were walking home from a bowling alley. From a passing car, an unidentified voice called out to the girls, “Hey baby, come here.” The car then stopped. Three persons exited from the car and one of them got back in. The respondent and Alfred Williams were identified as the two who remained outside the car. Celeste and Debbie began to run and Kirby and Williams gave chase. Williams grabbed Celeste and hit her in the face. Someone hit Debbie in the stomach, but she could neither describe nor identify who hit her. During the chase, someone said, *917“Which one do you want?” but neither victim could identify the voice at trial.
Kirby was charged with four counts of battery and two counts of mob action. Two of the four battery counts grew out of a prior incident which is not at issue here. The trial court entered a finding of not guilty as to one count of mob action and all the battery counts. Kirby was found guilty of mob action on the sixth count.
Section 25 — 1 of the Criminal Code of 1961 (Ill. Rev. Stat. 1975, ch. 38, par. 25 — 1) defines mob action as the use of force or violence disturbing the public peace by two or more persons acting together and without authority of law, or the assembly of two or more persons to do an unlawful act. The mob action statute has been interpreted to carry with it the requirement of a mental state. People v. Leach (1972), 3 Ill. App. 3d 389, 279 N.E.2d 450.
Juveniles can be adjudged delinquent only when the evidence satisfies the trial court of the facts constituting the delinquency beyond a reasonable doubt. (In re Winship (1970), 397 U.S. 358, 25 L. Ed. 2d 368, 90 S. Ct. 1068; People v. Urbasek (1967), 38 Ill. 2d 535, 232 N.E.2d 716.) The reasonable doubt standard applies to the proof of mental state as well. (People v. Johnson (1975), 32 Ill. App. 3d 36, 335 N.E.2d 144.) Mental state may, however, be proven by circumstantial evidence. People v. Johnson (1963), 28 Ill. 2d 441, 192 N.E.2d 864; People v. Tobin (1971), 2 Ill. App. 3d 538, 276 N.E.2d 828.
The only evidence of mob action or battery adduced against respondent was that she left a car, participated in a chase of Celeste and Debbie and was in the company of Alfred Williams when he committed a battery. There was no evidence that respondent either threatened or touched either victim.
In cases involving accountability, it has been held that mere presence is insufficient evidence upon which to convict. (People v. Butler (1973), 16 Ill. App. 3d 248, 305 N.E.2d 712.) In People v. Roldan (1973), 54 Ill. 2d 60, 294 N.E.2d 274, evidence that the defendants were present in a school yard where a riot or disturbance was taking place was held to be insufficient to support a conviction for mob action. That respondent was acquitted of the charges of battery negates any finding of mob action based on the use of force or violence by two or more persons as well as any theory of accountability for the batteries of Alfred Williams.
The statute also proscribes the coming together to do an unlawful act. Other than the chase of Celeste and Debbie, there is no evidence that Kirby carried with her an intent to do an unlawful act. The fact of her acquittal of the battery charges operates to place in doubt any inference the circumstantial evidence of her presence during the chase might raise concerning her intent to aid or abet Alfred Williams in the *918commission of an act of violence against either Celeste or Debbie. We therefore reverse the finding of guilty of mob action as not being beyond a reasonable doubt. Since the record shows that custody of respondent has already been restored to her mother, we need not remand for the termination of the wardship imposed upon the finding of delinquency.
The finding of delinquency is reversed.
Reversed.
REARDON, J., concurs.