Accordingly, more than the disasters of Toshimichi OKUBO and Tomomi IWAKURA, it is probable that the crime was committed by fuhei shizoku (the former samurai with gripes of the former bakufu side).
したがって、大久保利通や岩倉具視の遭難にも増して（旧幕府側の）不平士族による犯行と考えられる。