Mamoru Takuma

Mamoru Takuma (宅間 守[a], Takuma Mamoru; 23 November 1963 – 14 September 2004) was a Japanese mass murderer who killed eight children in the Ikeda school massacre in Ikeda, Osaka, on 8 June 2001. Takuma had a long history of mentally disturbed and anti-social behavior, and an extensive criminal record including a conviction for rape. He stabbed eight students to death and seriously wounded fifteen others at Ikeda Elementary School in a knife attack that lasted several minutes. Takuma was convicted in August 2003 and executed on 14 September 2004.

Source: “Mamoru Takuma”, English Wikipedia (CC BY-SA 4.0), excerpt