Police investigating the disappearance of Madeleine McCann believe the case could be solved in months.
German prosecutor Hans Christian Wolters has said his team is “pleased” with the progress of the investigation since they announced Christian Brueckner as their prime suspect last year and said they had received “very interesting tips”.
“We hope we can solve the disappearance of Madeleine McCann, although this will take several months,” he told The Mirror.
“We are pleased with the response to our appeal for witnesses. But unfortunately not all our questions have been answered.”
He said Brueckner will be interviewed “at the end of the investigation,” adding: “When we have completed our investigations, we will inform the public about the result and then also about further details.”
Brueckner, a convicted pedophile, is suspected of murdering Madeleine more than 10 years ago.
He was sentenced to seven years in jail for raping an American woman in Portugal in 2005 and is now reportedly being investigated over the disappearances of other children, as well as Madeleine.
He was living in a camper van close to Praia da Luz, on the Algarve, when Madeleine disappeared in May 2007.
He is also alleged to have confessed to abducting the three-year-old while talking to a criminal associate at a bar.
Brueckner denies being involved in Madeleine’s appearance and has refused to talk to police.
It is believed he has been under investigation for four years, Sky News reported.
Last year, investigators revealed his mobile “pinged” close to the resort where the McCann family were staying on the night Madeleine vanished.
Mr Wolters said his team have not tracked down who Brueckner called that night.
He also told The Mirror that authorities have not spoken to Kate and Gerry McCann about the case.