
He was taken for questioning in Kyoto and asked to see the sword. Shinbei's sword was found at the scene of the assassination of a senior official Anegakōji Kintomo.

The was formed in 1863 to suppress the hitokiri and Tosa loyalists and restore law and order. Because of this, Tanakaba was titled 'ansatsu taicho' (captain of assassins). He was also suspected of murdering a young woman named Komichi. Besides Naosuke, his victims included politicians such as Shimada Sakon, Ukyo Omokuni and Homma Seiichiro. Of all the Hitokiris, Shinbei killed the most number of people.

This assassination sparked years of violence in Japan especially in where assassinations became commonplace. Shinbei was involved in the assassination of, the head of the Council of Elders who was the head of administration for the Tokugawa shogunate in 1860.

After his first high-level assassination, he was elevated to samurai status despite the traditional samurai disdain towards peasants. Hanpeita ordered Shinbei and the other hitokiri to seek 'Heaven's Revenge' against supporters of the Shogunate and supporters of foreign access to Japan.Ī hitokiri from the, Shinbei came from a peasant background. The hitokiri including Shinbei were working under the command of, the leader of the, who sought to overthrow the and restore the to power. Tanaka Shinbei ( 田中 新兵衛, 1832 – July 11, 1863) was one of the, elite samurai, active in Japan during the in the 1860s.
