How have courts dealt with allegations in a juvenile wardship petition alleging that appellant committed second degree robbery?

A Welfare and Institutions Code¹ section 602 juvenile wardship petition alleged appellant committed second degree robbery ( Pen. Code, 211 ), and further alleged Minor personally used a dangerous or deadly weapon, to wit, a BB gun ( Pen. Code, 12022, subd. (b)(1) ). Minor filed a motion to suppress his statements to police, arguing they were elicited in violation of Miranda v. Arizona (1966) 384 U.S. 436, 86 S.Ct. 1602, 16 L.Ed.2d 694 ( Miranda ). Following an evidentiary hearing on both the motion to suppress and jurisdiction, the juvenile court denied the motion to suppress and sustained the allegations of the petition.