Last month, an appraisal detention began to examine the criminal liability of a second-year high school boy who was arrested in a case where three students, including an examinee, were cut in front of the gate of the University of Tokyo.

On the 15th of last month, three men and women, including examinees, were injured one after another in front of the gate of the University of Tokyo, which was the venue for the common test for university admission, and a 17-year-old second-year high school boy in Nagoya City was murdered. He was arrested on suspicion of attempted attempts.



In addition, just before the incident, he was sent off on suspicion of disrupting his business because he sprinkled a liquid such as ethanol in the train of Tokyo Metro.



According to an interview with the people concerned, it was found that the appraisal detention had started by the 25th to investigate the criminal responsibility of the boys.



The period is scheduled for three months until May, and it is expected that experts will check the mental state at that time in detail.



According to an investigative official, he said to the investigation so far, "I wanted to enter the University of Tokyo with the aim of becoming a doctor, but I was worried because my grades were poor. I thought I would die in an incident." about it.