A 16-year-old boy who was arrested in April in the stabbing of his teacher in a Hiroshima classroom told investigators he "wanted to kill to eat human flesh," police sources said Friday.

The boy, a student at a municipal technical high school in the prefecture, told police: "I was waiting for a chance. I wanted to eat the flesh of anyone," the sources said.

The teenager is under arrest for stabbing a 30-year-old male teacher with a kitchen knife during an evening class at the school. The teacher sustained serious injuries to his right arm.

The boy reportedly got into a fight with the teacher after he was ordered to stop walking around in the classroom. He then left the room and returned with the knife, which was hidden in his locker, and attacked the teacher.

He told police he kept the knife in the locker "in order to kill people whenever there was a chance," according to the sources.

The Hiroshima District Public Prosecutor's Office sent the teen to a psychiatrist, who concluded the youth was not mentally ill and can be held liable for what he did.

The psychiatrist — the same doctor who recently performed a similar test on the 17-year-old arrested in the May 3-4 fatal bus hijacking — said the boy's actions were premeditated and backed by clear motives.

Following the psychiatric evaluation, prosecutors sent the case to the Hiroshima Family Court, with a recommendation the teen be sent to a juvenile correction facility.