The Brief Dyllin Keys, 18, was sentenced to five years in prison after stealing a 12-year-old boy's e-bike at gunpoint in Gilbert. Gilbert Police officers arrested Keys shortly after responding to the victim's 911 call. An 18-year-old accused of robbing a 12-year-old boy at gunpoint in Gilbert back in February, has been sentenced to prison. Related articleWhat we know:Keys was arrested and booked on charges of armed robbery, aggravated robbery, aggravated assault, misconduct involving weapons and underage possession of liquor. The 14-year-old was arrested on charges of armed robbery, aggravated robbery, aggravated assault, and unlawful flight from a pursuing law enforcement vehicle.