The court properly denied appellant's motion to suppress his statements to the police. The evidence established that appellant was questioned in a designated juvenile room in the presence of his mother, and that he knowingly and intelligently waived his Miranda rights ( see Fare v. Michael C., 442 US 707, 725-728). Appellant clearly and unequivocally stated that he understood each right, and gave no indication to the contrary.
The court's finding was based on legally sufficient evidence and was not against the weight of the evidence. The evidence, including appellant's voluntary and reliable statement, established his accessorial liability beyond a reasonable doubt.