Tsuyama massacre
Crime
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The Tsuyama massacre was a revenge spree killing that occurred on the night of 21 May 1938 in the rural village of Kamo close to Tsuyama in Okayama, Empire of Japan. Wikipedia
Date: May 21, 1938
Deaths: 31 (including the perpetrator and the perpetrator's grandmother)
Perpetrator: Mutsuo Toi
Weapons: Remington M11 shotgun, Japanese sword, axe
Location: Kamocho Yukishige and ōaza