Shinji Miyadai, a 64-year-old professor and sociologist at Tokyo Metropolitan University in Hachioji, Tokyo, was attacked with a knife and was seriously injured. Did.
The person who was sent documents is Minoru Kuramitsu (41) from Minami Ward, Sagamihara City.
According to the Metropolitan Police Department, in November last year, he was suspected of attempted murder after slashing Shinji Miyadai, a professor of sociology at the Minami-Osawa Campus of Tokyo Metropolitan University in Hachioji, Tokyo, with a knife and inflicting a serious injury that took six weeks to fully heal. is held.
As a result of the analysis of security camera footage by the Metropolitan Police Department, it was found that from about a month before the incident, Mr. Miyadai had been coming and going around his home many times and had broken into the building where the university's office was located. As you can see, he died in his home the month after the incident, after the footage was released.
He is believed to have committed suicide.
According to the Metropolitan Police Department, after that, several notes that were believed to have been written by the suspect about 15 years ago were found in his home. It is said that it was written that it is a race that should not come to the top.
Although the Metropolitan Police Department believes that these may lead to the elucidation of the motive, it seems that the computer and notes that were used until just before have been disposed of, and the investigation will be completed without knowing the detailed motive.