Police arrested a woman who wielded a knife and injured four passengers inside a train that stopped at Tokyo’s electronic town of Akihabara late Wednesday, Japanese media reported. Police rushed to the scene after a report that a woman was brandishing a knife while the train stopped at the Akihabara station, where four people were injured and taken to a hospital, NHK public television reported.Police arrested a woman who wielded a knife and injured four passengers inside a train that stopped at Tokyo’s electronic town of Akihabara late Wednesday, Japanese media reported. Police rushed to the scene after a report that a woman was brandishing a knife while the train stopped at the Akihabara station, where four people were injured and taken to a hospital, NHK public television reported.