A top UK prosecutor has indicated that an ongoing investigation involving Peter Mandelson could take more than a year to complete, according to recent statements.

The investigation has drawn attention following the release of a batch of Mandelson files earlier this week. However, the document release has revealed gaps in the expected materials.

Messages from minister Darren Jones that were anticipated to be included in the published Mandelson files did not appear in the batch released this week. The absence of these communications has raised questions about the completeness of the document disclosure.

The extended timeline suggested by prosecutors indicates the complexity and scope of the ongoing investigation. No specific details about the nature of the investigation or reasons for the projected lengthy duration have been disclosed publicly.

The missing ministerial communications and the prosecutor's timeline estimate suggest the investigation involves multiple parties and potentially extensive document review processes.