Berlin: A German suspect in the ongoing investigation into the disappearance of British toddler Madeleine McCann has refused to cooperate with authorities, declining an interview with police.

According to Deutsche Welle, the suspect, already serving time for unrelated charges, has been linked to the case by German prosecutors who believe they have "concrete evidence" of McCann's involvement in her disappearance. Despite this, the suspect's lawyer has advised against any engagement with law enforcement, citing the lack of new evidence presented by the police that could warrant further questioning.

The case of Madeleine McCann, who vanished from a holiday apartment in Praia da Luz, Portugal, in 2007, has been one of the most high-profile missing person cases in recent history. German authorities have been working closely with their British and Portuguese counterparts to resolve the case, with this latest development marking a significant roadblock in their efforts.

The suspect, identified in German media, has been in custody for other offenses, including drug trafficking and sexual assault charges. The refusal to cooperate comes amidst mounting pressure from international media and continuous public interest in the case.

German officials maintain that the suspect is central to their investigation, and they are currently exploring other avenues to gather evidence without the suspect's cooperation. The refusal adds another layer of complexity to a case already fraught with challenges, as authorities continue their search for closure in the disappearance of Madeleine McCann.