Portuguese police are questioning four suspects in connection with the disappearance of Madeleine McCann. British police are sitting in on the interviews.
ITV News Correspondent Neil Connery is in Faro:
ITV News understands British police sniffer dogs are in Portugal and on standby if required by investigation.
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A man, reportedly armed with a knife and a baseball bat, was detained close to the event and police cleared the area as a precaution.
A remarkably mild night
Thousands of people have gathered in the centre of Manchester for a vigil in the wake of the terror attack.