According to Tani Tateki (1837-1911) of the Tosa han, Kondō was arrested under the alias of Okubo Yamato and executed by the new government (formed mostly by the samurai of the Chōshū han and the Satsuma han) as a direct result of being accused of the murder of Sakamoto Ryōma.
He has several grave sites; it is believed that the first of them was the grave erected at Ten'nei-ji Temple (天寧寺) in Aizu by Hijikata Toshizō [REF].