French and Swiss police have launched an investigation after the body of a 46-year-old French woman was found in Lake Geneva near Allaman in canton Vaud.
A man, who police say knew the woman, has been arrested.
Vaud police say the 46-year-old man is now in custody.
No further information about the body is being released, but police confirm they suspect foul play.
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This winter was significantly warmer than average
