The Challenge of "Inappropriate Relationships" Raised by the Case of Former Prosecutor Masanori Nishida of the Tokyo District Public Prosecutors Office
The Union has received multiple documents, recordings, and testimonies regarding this investigation.
Given that photos from before the arrest are circulating, the leak of investigative information from within the Yokohama District Public Prosecutors Office is not stopping at all.
It is not possible to evaluate at this time whether all of the content is factually accurate. However, if even a part of it is true, it includes important issues that go beyond the problems of individual cases and concern the way investigative agencies manage information and collect testimony.
According to multiple prosecutors' office sources, during the interrogation of one of the suspects, statements to the effect of "If you don't say Mr. A is bad, you will become the worst person," and "From a third-party perspective, it looks like Mr. Nakano and Mr. Kanemoto are planning this" were reportedly made. This recording should be a fact that should be requested for disclosure in the future.
Regarding this testimony, while its accuracy will require verification through a request to disclose the recordings in the future, sources involved have stated that they "sense an aggressiveness and impatience that suggests the direction of the statement."
Additionally, multiple informants explain that this union possesses recordings in which Mr. Nakano is alleged to have said things such as, "I've got the National Tax Agency and the Public Prosecutors' Office on my side," "I'm avoiding international pursuit by being arrested in Japan," and "I'm going to have Mr. A arrested to avoid my debts and make him take responsibility."
Regarding the content of the recording itself, careful verification is necessary, including its authenticity and context. However, if such a statement was actually made before the investigation began, it is hoped that an objective investigation will be conducted at least to determine whether the statement was mere exaggeration or based on concrete grounds.
Furthermore, this union has received multiple testimonies indicating that information regarding the statements of investigators and the investigative approach was shared among parties involved in the case.
If these were true, it would necessitate an examination of the investigative information management system and the channels through which information flows.
On the other hand, this union has not confirmed evidence at this time that prosecutors from the Yokohama District Public Prosecutors Office and the Kagoshima District Public Prosecutors Office had an inappropriate relationship with Mr. Nakano.
That is why it is important to conduct an internal investigation based on objective evidence such as communication records, contact history, and access logs for investigative information, rather than leaving suspicions unaddressed.
Trust in the criminal justice system is not supported by the number of convictions, but by the transparency and accountability of the investigative process.
As the case of former Tokyo District Public Prosecutors Office special investigation department prosecutor Masanori Nishida has shown, it is also required that the prosecutorial organization be open to external scrutiny.



