I thought the scariest thing that was going to happen in Japan this ハロウィン (Harouin, Halloween) was the 衆議院選挙 (shūgi-in senkyo, Lower House election). Over the course of the evening, however, a ニュース速報 (nyūsu sokuhō, breaking news) alert reported a knife attack on the Keio Line in Tokyo that left 17 passengers injured.
東京調布市を走行中の電車内で乗客が切りつけられるなどして17人がけがをした (Tōkyō Chōfu-shi o sōkōchū no densha-nai de jōkyaku ga kiritsukerareru nado shite jūnana-nin ga kega o shita, Passengers were slashed in a train passing through the Tokyo city of Chofu, leaving 17 people injured), reported national broadcaster NHK.
The 容疑者 (yōgisha, suspect), later identified as Kyota Hattori, told investigators he was inspired by a different knife attack that took place on the Odakyu Line on Aug. 6 that left 10 passengers injured. In both cases, 容疑者は特急電車に乗り込んで、刃物を振り回した (yōgisha wa tokkyū densha ni norikonde, hamono o furimawashita, the suspects boarded limited express trains and brandished knives).