A 16-year-old high school girl who was arrested Sunday for the grisly murder of her 15-year-old classmate in Sasebo, Nagasaki Prefecture, told police on Monday that she wanted to see what it was like to kill someone.
The suspect was sent to prosecutors as police, educators and psychologists tried to determine her motive for killing Aiwa Matsuo.
Officials at the school that the two girls attended expressed shock Monday and said there was no indication of any trouble between the two, Sankei Shimbun reported.
Police said the suspect told them that she and Matsuo went shopping on Saturday afternoon and when they returned to her apartment, she killed her. Police said the girl admitted striking Matsuo on the back of the head at least 10 times with a hammer. She then strangled her with a cord, before hacking her head off with a saw. Matsuo's left hand was also severed, police said.
After Matsuo failed to return home on Saturday night, her parents called police who came to the suspect's apartment to look for her. They found the suspect with Matsuo's body.
The suspect also told police that she bought the tools she used to kill Matsuo a few days prior to the attack.
The suspect had been living alone in the apartment since April. Sankei Shimbun reported that her mother died of an illness last year and that her father had remarried.
Police are also investigating the posting of four anonymous messages, showing some bloody images, on 2channel, which purported to be from someone claiming he or she just murdered someone. The messages were posted after 10 p.m. on the night of the murder, police said.© Japan Today