It is Inquisitorial, as in a judge would interrogate...but this is the point I've been trying to make;
'“The degree of suspicion needed to open an investigation (Anfangsverdacht) based on ascertainable facts is not very high, though; it need only make it appear possible that, according to criminal experience, an offence may have been committed.”
Excerpt From: Bohlander, Michael. “Principles of German Criminal Procedure.”
Based on this and what he has said ( for me at least) it confirms the Prosecutor, based on experience believes it possible the crime has been committed. The UK press don't understand that and have jumped on the word 'concrete' thinking it means he has a piece of concrete evidence.
Thanks for digging that out, Gertrude.
My understanding is that a case would only go to court if there is a stronger likelihood of a conviction than an acquittal (much like elsewhere, in theory). There would appear to be some circumstantial evidence at least, but no hard evidence (as in a body) for the moment, hence the appeal.
I'm not sure if his reasoning is that if there's no information that she's alive, then she's dead; or whether there is some type of concrete but indirect evidence (e.g., pyjamas found somewhere that linked to him).
[Hans Christian Wolters] admitted he does not have enough
"hard evidence" for the suspect to go on trial.
(...)
He told Sky News: "After all the
information we got, the girl is dead. We have no information that she is alive.
"All
indications we have got that I can't tell you point in the direction that Madeleine is dead.
"We got things we cannot communicate that speak for the theory that Madeleine is dead, even if I have to admit that we don't have the body."
https://news.sky.com/story/madeleine-mccann-german-prosecutor-has-evidence-british-girl-is-dead-12003094