ITV's Cordelia Kretzschmar reports from the Costa del Sol in Spain after Portuguese police pass on details of a sighting there of a girl matching Madeleine McCann's description.
The report says she was with a German family and appeared groggy and didn't look like the German family she arrived with.
The German family added another child to their booking on the day they arrived and the registration plate of their car did not match its make or model.
These suspicions were reported by a witness to the Portuguese police at the time - just days after Madeleine's disappearance.
As Madeleine approaches her ninth birthday, this is appears to be a fresh, new lead in the case.
Our correspondent Gareth Owen has revisited Praia da Luz, five years since the disappearance of Madeleine McCann.
A timeline of events on how the investigation into Madeleine McCann's disappearance has elapsed over the 5 years since she went missing.
The parents of Madeleine McCann have spoken about the investigation into their daughters disappearance in a TV interview.