The Osaka Family Court on Thursday sent a mentally ill 19-year-old boy who killed his mother and wounded his father and brother in November to a medical juvenile reformatory.
The youth will receive treatment at the reformatory "for a substantial period of at least three years," presiding judge Tetsushi Yukawa said.
The court also sent his 16-year-old girlfriend, who conspired with him in the crime, to a medical juvenile reformatory.