On 14 December 2007, a gunman opened fire in a gym in Sasebo, Nagasaki Prefecture, Japan, killing two people and wounding six others, among them two children.
[1][2][3] 37-year-old Masayoshi Magome, the shooter, was found dead in a nearby Catholic church the following day, having apparently died by suicide.
[3] The prefectural police departments of Nagasaki and neighboring Fukuoka deployed the Special Assault Team shortly after the incident.
[4] The perpetrator, Masayoshi Magome (馬込 政義), was a 37-year-old unemployed man who lived with his parents and had a history of mental illness.
[5] Investigators claimed that Magome was friends with Kuramoto and Fujimoto, the two people killed, and often ate at their homes.