Investigators spent several hours quizzing a couple who housed the sex offender just three months before Madeleine vanished from her family's holiday apartment in Portugal, in May 2007.

Met chief Mark Rowley says many questions remain and detectives are liaising with German and Portuguese police

Madeleine McCann suspect Christian Brueckner's lawyer has sensationally admitted he understands 'concerns' over his client's sickening child sex and rape convictions.