A prosecutor who believes Madeleine McCann was killed by a German sex offender says the public would reach the same conclusion if they "knew the evidence we had".
Hans Christian Wolters told the BBC that while his team does not currently have enough evidence to charge Christian B, he is "very confident".
Their prime suspect is in prison serving sentences in Germany for drug smuggling and rape.
Madeleine disappeared in 2007.
She was on holiday with her family in Praia da Luz, Portugal, at the time of her disappearance, the same resort where Christian B raped a 72-year-old American woman.