Elizabeth Callaghan: UK correspondent on police renewing the search for Madeleine McCann - Heather du Plessis-Allan Drive

Portugal police have announced a fresh search for Madeleine McCann.

The British three-year-old disappeared 18 years ago from a resort in Praia da Luz - one of the most high-profile missing person cases in history.

The search centres around the resort - and chief suspect Christian Brueckner's former home.

UK correspondent Elizabeth Callaghan says this search is designed to gather more evidence about the case.

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