Two men have been arrested in connection with the investigation into the death of university graduate Catherine Wells-Burr, police said.
A 31-year-old man and a 38-year-old man remain in police custody where they are being questioned.
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Protesters angry that far-right leader Marine Le Pen is advancing the French presidential runoff are scuffling with police in Paris.
Polling projections show the far-right leader Marine Le Pen and centrist Emmanuel Macron leading in the first-round of the French election.
Winds veer northerly overnight and a band of patchy rain moves slowly southwards - wintry in places.