In a new update on the case, Thames Valley Police Assistant Chief Constable Oliver Wright repeated the force’s call for information, saying: “We encourage anyone with information to get in touch with us.”
“Misconduct in public office is a crime that can take different forms, making this a complex investigation,” he said.
“There’s a number of aspects of alleged misconduct that the investigation is examining.”
BBC News understands that detectives are concerned that there may be a public perception that their investigation is narrowly focused on the sharing of confidential information.
Misconduct in public office is a broad offence defined as someone who holds public office wilfully neglecting their duty by behaviour that can potentially encompass a wide range, including things such as sexual misconduct, financial misconduct, abuse of position, misconduct leading to personal gain and corruption.
It is understood detectives do not want people to think they are only focusing on potential misconduct involving “the state”, rather than possible crimes that would involve people, which can also be part of a misconduct case.