A court document says a 12-year-old boy accused of fatally stabbing a 9-year-old boy on a western Michigan playground told authorities he wanted to go to jail and did not know the victim.

A delinquency petition filed Friday in Kent County Circuit Court says the 12-year-old told investigators he's ``bad and always does stupid things.'' He added he thought he'd be killed ``for doing something like this.''

A message was left for the boy's attorney, Charles Boekeloo, who entered a not-guilty plea for his client Tuesday, a day after the stabbing of Michael Connor Verkerke in Kentwood, near Grand Rapids.