The Akihabara massacre (Japanese: 秋葉原通り魔事件, Hepburn: Akihabara Tōrima Jiken) was an incident of mass murder that took place on 8 June 2008, in the Akihabara shopping quarter in Chiyoda, Tokyo, Japan. The perpetrator, 25-year-old Tomohiro Katō (加藤 智大, Katō Tomohiro) of Susono, Shizuoka Prefecture, drove into a crowd with a rented truck, initially killing three people and injuring two; he then stabbed at least twelve people using a dagger, killing four other people and injuring eight.The Tokyo Metropolitan Police Department arrested Katō on suspicion of attempted murder, holding him at Manseibashi police station. Two days later on 10 June, he was sent to the Tokyo District Public Prosecutor's Office. He was later re-arrested by the police on 20 June on suspicion of murder. Katō was sentenced to death by the Tokyo District Court in 2011; the sentence was upheld on appeal in 2015.