The Matsumoto sarin attack was an attempted assassination perpetrated by members of the Aum Shinrikyo doomsday cult in Matsumoto, Nagano Prefecture, Japan, on the night of June 27, 1994. Eight people were killed and more than 500 were harmed by sarin aerosol that was released from a converted refrigerator truck in the Kaichi Heights area. The attack was perpetrated nine months before the better-known Tokyo subway sarin attack.
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