Portuguese police to interview 11 witnesses about Madeleine McCann, observed by British police

The transcript discusses the ongoing investigation into the disappearance of Madeleine McCann, led by British and Portuguese police. Key witnesses, including a laundry worker and a former suspect, are being interviewed. The investigation, known as Operation Grange, was launched by Scotland Yard in 2011, identifying 38 people of interest. Despite extensive efforts, including excavations, no new evidence has been found. The police hope new interviews will provide fresh insights into the case.

Can you name one of the witnesses interviewed by the police?

What did the police hope to achieve with the new interviews conducted in the investigation?