https://mainichi.jp/articles/20251228/k00/00m/040/060000c
In connection with the incident in which 15 employees were stabbed and injured at the Yokohama Rubber Mishima Factory in Mishima City, Shizuoka Prefecture, the Mishima Police Station of the Shizuoka Prefectural Police arrested unemployed suspect Masaki Oyama (38) from Naka, Mishima City on suspicion of attempted murder on the morning of the 28th and sent him to the Numazu Branch of the Shizuoka District Public Prosecutors Office.
According to investigators, Koyama is a former employee of the factory, and during questioning he stated that he was "dissatisfied with interpersonal relationships at work." He is believed to have prepared a survival knife and a liquid similar to bleach, then donned what appeared to be a gas mask and entered the factory.
The incident occurred around 4:00 pm on the 26th. Fifteen male employees in their 20s to 50s were injured and taken to the hospital. Eight were believed to have been injured by a knife, and seven by liquid. All 15 were conscious when they were taken to the hospital.
Koyama was subdued by employees at the scene, and police officers who rushed to the scene arrested him on the spot on suspicion of attempted murder of one of the injured people.
by YamatoRyu2006