Prosecutors are investigating the possibility Madeleine McCann was killed after being abducted and sold to a child trafficking gang.
Hans Christian-Wolters made the revelation in a Portuguese TV interview just days after revealing to MailOnline he had ‘new evidence’ against prime suspect Christian Brueckner.
Since then they have been building a case against him but no charges have been brought – fuelling speculation the case against him is crumbling away and there will be no end to the 15 year mystery.
Portuguese TV reporter Sandra Felgueiras during her Sabado show on CMTV, asked Mr Wolters:’ So, you don’t believe that she was sold ?’
To which he replied: ‘I am not allowed to speak about these details,’ but when pressed and asked ‘if this was a possibility?’ he answered:’ Maybe it’s a possibility,’ without denying it.
The possibility that Madeleine was kidnapped to order for a child trafficking gang has been mooted before but there has never been any real elements to back the theory up.
Five years ago former Scotland Yard officer Colin Sutton suggested a ‘kidnap to order’ was the most likely and credible scenario for her disappearance.
However Mr Wolters insists they have ‘significant new evidence’ against him but ‘not forensic evidence’ and are adamant Brueckner is the man responsible.
Madeleine vanished from her parents Kate and Gerry’s holiday apartment in Praia da Luz on Portugal’s Algarve coast in May 2007 and despite numerous ‘sightings’ no trace of her has ever been found.
The show once again highlighted Brueckner’s relationship with fellow German Nicole Fehlinger and suggested they carried out the kidnap together.
But Mr Wolters denied this theory and said:’ We have checked this out. It is not part of our enquiry.’
He added:’ I can only say that at the moment we have only one suspicious person and that is Christian, there is no other person for us who is suspicious.’
When pressed as to when there would be a conclusion to the case Mr Wolters said: ‘The public and the McCanns have the right that we investigate seriously and that we only say something about the case when we are sure.’
‘He added: ‘We are sure that he is the murderer of Madeleine McCann.