ARLEE, Mont. -

A 16-year-old Arlee boy has denied charges that he stabbed his step-father to death and stabbed his mother and another man.

The boy pleaded not guilty in District Court in Polson Wednesday to charges of deliberate homicide, attempted deliberate homicide and assault with a weapon.
   
John Fisher was killed in the Nov. 12 attack, Dacia Vollin was critically wounded and another man, Theodore Perry, was stabbed with a pocket knife.
   
Prosecutors say the boy had been thinking about "hurting his mom and dad" in the hours before the attack and told investigators he stabbed the victims.
   
He is being held at a youth detention center in Missoula with bail set at $250,000.
   
District Judge C.B. McNeil ordered a psychological evaluation and scheduled an April 15 trial date.