I thought this was interesting re. German law. There are 3 stages of criminal proceedings. They must be at stage one with Bruckner as he hasn't been charged. This bit stood out to me...
'The aim of the investigation is to establish whether or not the suspicion against you is justified.' , so technically at this stage everything is only a suspicion?
'Investigation (Ermittlungsverfahren): The prosecuting authorities (either the public prosecutor or the police) will start an investigation if they suspect you of a criminal offence. The aim of the investigation is to establish whether or not the suspicion against you is justified. In order to conduct their investigation they may take a variety of measures, including searching your home. When the investigation is complete, the public prosecutor will decide whether to discontinue the proceedings on lack of suspicion or whether to charge you.
(Zwischenverfahren): In the intermediate proceedings a court assesses the charge and decides whether or not the prosecution should proceed. If the court believes that there is enough evidence to make a conviction likely, it will open the main proceedings.
Main proceedings (Hauptverfahren): In the main proceedings, the court prepares and conducts the trial. The court tests the charge at an oral hearing on the basis of the evidence available (eyewitnesses, documents, etc.). You will also be given the opportunity to tell the court your version of events and to comment on the allegations. If you are found to have committed the offence, you will be convicted. If not, you will be acquitted. You can appeal against a judgment within certain time‑limits. In a full appeal (Berufsverfahren), the main proceedings are repeated before a higher court. In review proceedings (Revisionsverfahren), the judgment is checked only for legal defects.'
https://e-justice.europa.eu/content_rights_of_defendants_in_criminal_proceedings_-169-de-en.do?member=1