LOGAN, Iowa (AP) – An Iowa judge has ordered more evaluations of an 18-year-old found not guilty of killing his foster brother. The Des Moines Register reports that in her order earlier this month, Judge Kathleen Kilnoski said Cody Metzker-Madsen remains “dangerous to himself and others.” In November Metzker-Madsen was found not guilty by reason of insanity in the death of 5-year-old Dominic Elkins. The Atlantic boy was attacked in August 2013 while the two played on their foster parents’ rural property in western Iowa.

Kilnoski says Metzker-Madsen must remain for now at the Iowa Medical and Classification Center in Coralville. After the trial, a psychiatrist there diagnosed him as having an unspecified psychotic disorder and with oppositional defiant disorder and intermittent explosive disorder. Experts say the disorders can cause violent tantrums and aggression.