Germany’s espionage investigation into former intelligence chief August Hanning has widened, with the Federal Interior Ministry examining possible breaches of secrecy regulations during his time as a senior government official. The development raises further questions about the handling of classified intelligence, including material supplied by Germany’s international security partners.

Germany’s Federal Interior Ministry confirmed on Thursday, 8 October, that it was examining whether confidentiality regulations may have been breached during August Hanning’s tenure as state secretary between 2005 and 2009. The examination follows his arrest on suspicion of espionage and attempted treason, and the discovery of a suspected network supplying sensitive intelligence documents from within Germany’s Federal Intelligence Service (BND).

According to the latest information on the ministry’s examination, officials have ordered an immediate review. The ministry has not disclosed its scope or whether investigators have identified any additional security breaches during Hanning’s government service.

Hanning, 80, headed the BND from 1998 until 2005 before moving to the Interior Ministry, where he remained until 2009. An investigating judge at Germany’s Federal Court of Justice subsequently ordered his continued detention following his arrest on Tuesday.

His former chief of staff, identified under German privacy rules as Manfred D., has also been remanded in custody. Prosecutors suspect that the two men maintained an arrangement through which confidential intelligence documents were obtained in exchange for payment.

Thousands of intelligence documents under investigation

Federal prosecutors believe the arrangement began around 2010, several years after Hanning left the BND, and continued until June 2022.

Investigators suspect that approximately 2,000 documents were obtained through Hanning’s former colleague, who remained in senior administrative positions at the intelligence service under successive directors.

The material reportedly included assessments of Russia’s military activities, information concerning Iran’s nuclear programme and intelligence originating from foreign partner services. Some documents were intended for senior German government officials, including the chancellery.

Prosecutors suspect that Hanning used confidential material in his private security consultancy and prepared at least one analysis for a foreign intelligence contact. Whether the analysis was ultimately delivered remains unclear.

The investigation consequently extends beyond the suspected unauthorised removal of German state documents. Intelligence supplied by foreign governments is frequently shared under restrictions governing its subsequent distribution. Any compromise of such material could require Germany to assess whether sensitive foreign sources, methods or assessments were exposed.

BND president Martin Jäger has confirmed that the service initiated extensive internal investigations after suspicions emerged. The affair has also drawn attention from the Bundestag’s parliamentary intelligence oversight body, whose chairman, Marc Henrichmann, has called for a comprehensive investigation.

Hanning acknowledges possession of confidential files

Hanning’s lawyer, Leon Kruse, has rejected the accusations while acknowledging that his client possessed confidential documents.

In a statement released following the court hearing, Kruse denied that Hanning had passed information to the detriment of Germany or received payment for doing so. He maintained that further investigations would establish that his client was being wrongly prosecuted.

The defence statement establishes an important point in the proceedings: possession of confidential material is acknowledged, but its alleged commercial exploitation and transfer to foreign intelligence services remain disputed.

Investigators must establish how the documents were acquired, whether payments were made and what classified information, if any, reached foreign recipients.

Azerbaijan rejects alleged intelligence connection

The identity of the foreign intelligence service involved remains another unresolved question.

German reporting has raised the possibility of a connection to Azerbaijan, although federal prosecutors have not publicly identified the foreign service concerned.

Azerbaijan has rejected suggestions that its intelligence authorities were involved. Baku reportedly lodged a diplomatic protest with the German government, challenging the allegations and their potential consequences for bilateral relations.

The possibility of a Russian connection has also attracted attention because of Hanning’s international business contacts and his association with former Chancellor Gerhard Schröder. However, no evidence establishing Russian involvement has been publicly presented by German prosecutors.

Hanning’s foreign commercial relationships alone do not establish that classified information was transferred to any particular government.

Investigation originated in separate kidnapping case

The circumstances that brought Hanning to investigators’ attention have added another dimension to the affair.

The suspected intelligence breach emerged during an investigation connected to German businesswoman Christina Block, who is facing criminal proceedings over allegations concerning the abduction of her children.

Hanning had reportedly provided advisory services connected to the affair. Searches conducted in September 2025 led investigators to confidential BND material, prompting a separate examination of how the documents had been obtained.

The discovery subsequently developed into an intelligence investigation involving federal prosecutors and Germany’s domestic criminal investigation authorities.

German government faces questions over intelligence safeguards

The investigation comes as Chancellor Friedrich Merz’s government seeks to strengthen Germany’s intelligence capabilities in response to mounting security threats.

The BND’s ability to obtain and exchange intelligence depends partly on the confidence of partner organisations. Concerns now centre on whether documents supplied by allied services were included in the material allegedly transferred, and whether Germany must inform partners about potential exposure.

The case is also prompting scrutiny of restrictions placed on former senior intelligence officials who subsequently enter private consultancy work.

At the German government’s press briefing on 7 October, a spokesman acknowledged the seriousness of the allegations but declined to discuss the proceedings, referring questions to federal prosecutors and the courts.

The Interior Ministry’s decision on 8 October to examine Hanning’s earlier government service potentially broadens the inquiry beyond the suspected transfer of BND documents between 2010 and 2022.

Investigators must now determine the extent of any unauthorised disclosure, identify any foreign recipients and assess whether information supplied by Germany’s security partners was compromised.

Both men remain presumed innocent unless convicted.