There will be no trial for one of two teenagers from Saint-Hyacinthe, Que., who was arrested last for allegedly plotting to kill three acquaintances.
The 16-year-old was declared not criminally responsible Tuesday in youth court, on account of a mental disorder.
He cannot be named because he is a minor.
He was facing 11 charges including conspiracy to commit murder and conspiracy to commit sexual assault, criminal harassment and possession of a weapon
He will remain at the Pinel Institute for treatment.
Charges against the 14-year-old remain in place. He is due back in court on April 6.
The two were arrested in September 2016 after police were alerted by a parent of one of the accused.