Jean-Claude Juncker, the former prime minister, is called to testify in the upcoming trial on the frisbee affair.Archive picture: Juncker leaves a meeting of the cabinet in July 2013. Christophe Olinger

Jean-Claude Juncker, the former prime minister, is called to testify in the upcoming trial on the frisbee affair.Archive picture: Juncker leaves a meeting of the cabinet in July 2013. Christophe Olinger

In July, the public prosecutor’s office announced that the former head of the secret service, Marco Mille, the head of operations, Fränk Schneider, and Srel employee André Kemmer will face criminal charges.

They are accused of breaking data protection and privacy protection laws. The three CDs allegedly contain a recording of a conversation in 2007 between the Juncker, at the time prime minister of Luxembourg, and the Grand Duke Henri. Mille has been charged with making the recording. Kemmer is also accused of illegally sharing CDs (the so-called Frisbee affair).

As the trial has not yet been held, the three men are presumed innocent as of this writing.

The scandal broke in 2012 when media heard of the existence of these CDs. A parliamentary enquiry discovered significant dysfunctions in the secret service, which eventually led to a government crisis, resulting in Juncker’s resignation and snap elections in October 2013.

The trial will start on 29 November and 8 hearings have been planned. It has not yet been determined how many witnesses will be called, but Juncker has been confirmed as on the witness list, along with the head of the investigation team, Fernand Ruppert.

Juncker was prime minister of Luxembourg between 1995 and 2013.