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 over 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. Sarin attack The sarin attack occurred in a quiet residential area in the city of Matsumoto, Nagano Prefecture. In carrying out the attack, Aum Shinrikyo had two goals; to attack three judges who were expected to rule against the cult in a lawsuit concerning a real estate dispute, and to test the efficacy of its sarin—which the cult was manufacturing at one of its facilities—as a weapon of mass murder. Residents of Matsumoto had also angered Aum founder Shoko Asahara by vigorously opposing his plan to set up an office and factory in the city's southern area. Opponents of the plan gathered 140,000 signatures on an anti-Aum petition, equivalent to 70 percent of Matsumoto's population at the time. Aum's original plan to release the aerosol into the Matsumoto courthouse was altered when the cult members arrived in the city after the courthouse had closed. They decided to instead target a three-story apartment building where the city's judges resided. At 10:40 pm, members of Aum used a converted refrigerator truck to release a cloud of sarin which floated near the home of the judges. The truck's cargo space held "a heating contraption that had been specifically designed to turn" twelve litres of liquid sarin into an aerosol, and fans to diffuse the aerosol into the neighbourhood. At 11:30 pm, Matsumoto police received an urgent report from paramedics that casualties were being transported to hospital. The patients were suffering from darkened vision, eye pain, headaches, nausea, diarrhea, miosis (constricted pupils), and numbness in their hands. Some victims described having seen a fog with a pungent and irritating smell floating by. A total of 274 people were treated. Five dead residents were discovered in their apartments, and two died in hospital immediately after admission. An eighth victim, Sumiko Kono, remained in a coma for fourteen years and died in 2008. The day after the attack, dead fish were found in a pond near the scene. The bodies of dogs, birds, and a large number of caterpillars