First stage: Lead

Denunciation

The vast amount of the Gestapo’s information came from informers and public cooperation. An estimated 80 per cent of all Gestapo investigations were started following denunciations from member of the public.

Police Detective Work

Unlike the criminal police, the Gestapo existed to counter political crimes – although this would also sometimes require the same police techniques. Around 10 per cent of investigations were started using information the Gestapo unearthed.

Departmental reports

Reports to the Gestapo would often be provided by different government branches, especially the Sicherheitsdienst. An estimated 10 per cent of Gestapo investigations were started following reports from other agencies.