Some people also take advantage of the situation, in which the case went unsolved, and make opportunistic inferences as follows; because Kido and Hirosawa were opposing each other, or it was a conspiracy of old-guard party, including Okubo, who wanted to drag Kido, the giant of the Kaimei (enlightenment) group, to the public, etc.
未解決事件であることをいいことに、木戸と広沢の仲が悪かったからだとか、開明派の巨頭である木戸を政府の前面に引っ張り出したい大久保など守旧派による謀略だ、などと願望する向きもある。