Several NHK-related documents, including project proposals and interview notes created by staff involved in NHK's reporting, have potentially leaked externally. The leaked documents, believed to be authentic, have circulated on social media, prompting NHK to investigate the possibility of information being shared outside the intended context.

The leaked documents on social media contain outlines for a planned coverage on online defamation issues and transcriptions of interviews with relevant individuals. NHK staff members confirm the authenticity of the leaked documents. The documents suggest that information gathered for reporting purposes may have been leaked for non-journalistic purposes.

NHK acknowledges the issue and states that they are currently investigating the facts surrounding the leak. The leaked documents, identified as NHK's property, are typically stored on the network within the organization, accessible to numerous employees.

One of the documents includes an interview with a person who had engaged in online defamation against a woman who had experienced abuse and sexual violence in Tokyo. The leaked documents also contain criticism from an individual who mentioned the possibility of the interview being broadcasted on NHK and provided a link to the accessible documents.

NHK is treating this incident as a serious matter and is actively investigating the circumstances surrounding the leak.