Madeleine McCann: Scotland Yard police pursue new leads

Scotland Yard says it has "new evidence and new witnesses" in the Madeleine McCann case and has opened a formal investigation into her disappearance.

The Met Police said it still believed there was a chance Madeleine was alive and it was investigating 38 "persons of interest" after reviewing the evidence.

Madeleine was almost four when she disappeared in Portugal in May 2007.

Richard Bilton reports.