Mitaka incident
The Mitaka incident (三鷹事件, Mitaka jiken) was an incident that took place in Mitaka, Tokyo, Japan, on July 15, 1949, when an unmanned 63 series train with its operating handle tied down drove into and derailed at Mitaka Station on the Chūō Line, killing six people and injuring twenty. The incident remains a mystery, as do the Shimoyama and Matsukawa incidents which occurred during the summer of 1949.