Madeleine McCann: Key witness delivers major blow for police investigation as 'plug pulled'
![Madeleine McCann: Key witness delivers major blow for police investigation as 'plug pulled'](https://www.gbnews.com/media-library/a-police-investigation-into-the-disappearance-of-madeleine-mccann-has-been-dealt-a-major-blow-with-a-key-witness-thought-to-be-t.jpg?id=39804089&width=1200&height=800&quality=90&coordinates=176%2C1%2C74%2C-1)
A police investigation into the disappearance of Madeleine McCann has been dealt a major blow with a key witness thought to be threatening to stop assisting officers
PA