British ex-pat Robert Murat is being questioned as a witness by police as part of the investigation into the 2007 disappearance of Madeleine McCann.
It is understood Murat and his wife will both be questioned in connection with the case.
British police have travelled to the Algarve in Portugal where they have been sitting in on interviews conducted by Portuguese officers.
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The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.