Mishima factory stabbings
| Mishima factory stabbings | |
|---|---|
| Location | 35°06′39″N 138°55′31″E / 35.110713958740234°N 138.9251708984375°E 8-1 Minamifutsukamachi, Mishima, Shizuoka 411-0832, Japan |
| Date | 26 December 2025 16:25 (JST) |
| Target | Employees at the Mishima Yokohama Rubber Company facility |
Attack type | Mass stabbing, Workplace violence, Chemical attack |
| Weapon | Survival knife, Bleach |
| Deaths | 0 |
| Injured | 15 |
| Victims | 15 |
| Perpetrator | Masaki Oyama |
| Motive | Revenge for workplace bullying[1] |
On 26 December 2025, a mass stabbing took place at the Yokohama Rubber Company facility in Mishima, Shizuoka Prefecture, Japan. The suspect, identified as a former employee, stabbed eight male employees with a knife and sprayed seven other men with bleach.[2]
Incident
During the evening shift, at approximately 16:34 JST, a former employee, wearing a gas mask and armed with a knife, walked into his business and immediately stabbed and wounded eight male workers one-by-one at the facility. The suspect sprayed bleach all over seven other men while attempting to stop the suspect.[3] Officials at the Asahi Shimbun investigated that the man had ties to the factory and was a former employee at the plant. He was arrested and charged with a dozen counts of attempted murder.[4]
Victims
All of the victims are male employees at the factory, ranged in age from 20 to 60.[5][6] Out of the fifteen men injured, six of the victims were taken to nearby hospitals in critical condition but all survived.[7]
Perpetrator
Shortly after the stabbings, the perpetrator was identified as Masaki Oyama of Mishima (born 1987), a 38-year-old former employee.[5] During an interview, police confirmed that Oyama wielded a survival knife in the attack.[8][9] He gave his motive as revenge for perceived workplace bullying. Two days after the attack, Oyama was indicted on attempted murder on one of the victims, a 28-year-old male employee, with a similar knife-looking object at the same plant.[1]
Investigation
Two days after the attack, the Shizuoka Prefectural Police searched Oyama's house in Mishima, where only a few details were immediately released. During questioning, Oyama stated that he targeted them, and was both depressed and "dissatisfied with interpersonal relationships at work."[1]
References
- ^ a b c ""I was being harassed at work" said Masaki Oyama, the suspect who stabbed 15 people at the Yokohama Rubber Mishima Factory in Shizuoka". Tokyo Broadcasting System. 28 December 2025. Retrieved 28 December 2025.
{{cite web}}: CS1 maint: url-status (link) - ^ "At least 15 injured in a knife and chemical attack at a factory in Japan". ABC News. 27 December 2025. Retrieved 27 December 2025.
- ^ "At least 15 injured in a knife and chemical attack at a factory in Japan". NBC News. 27 December 2025. Retrieved 27 December 2025.
- ^ "15 injured after stabbing spree at Shizuoka tire factory". The Japan Times. 26 December 2025. Retrieved 26 December 2025.
- ^ a b "Ex-employee arrested in attack on 15 workers at plant". Asahi. 27 December 2025. Retrieved 26 December 2025.
{{cite web}}: CS1 maint: url-status (link) - ^ "15 injured after stabbing spree at Shizuoka tire factory". The Straits Times. 26 December 2025. Retrieved 26 December 2025.
A total of 15 men, aged in their 20s to 50s, were taken to hospital, all of them conscious.
- ^ "Stabbing and chemical liquid attack in Japan tire factory injures 15". CBS News. 26 December 2025. Retrieved 26 December 2025.
- ^ "Man arrested over attack at Japan rubber factory previously worked there". KyodoNews. 27 December 2025. Retrieved 26 December 2025.
- ^ "Japan police arrest man over stabbing spree, 15 people injured". NHK World-Japan. 27 December 2025. Archived from the original on 26 December 2025. Retrieved 27 December 2025.