French rescue-workers are searching for a 66-year-old man reported missing at sea off Saint-Nazaire in western France since Sunday evening.
70-year-old Cyril Baldock has become the oldest person to swim across the English Channel between England and France.
Two climbers and their guide have been found dead after a fall in the Mont Blanc range, French police said on Monday.
Clashes broke out after a football match in Corsica on Saturday night that left 44 French riot and paramilitary police officers injured, the interior ministry said Sunday.
No black African cyclist has ever taken part in the Tour de France.
Two men have been charged with involvement in a machete attack on three French rugby players in southern France last weekend. Both have police records and have been identified by witnesses.
French internationals rugby players Aurélien Rougerie, Julien Pierre and Benjamin Kayser were attacked on Sunday by a dozen armed men with machetes and sabres.
Traffic jams were expected to clog France’s motorways on Saturday as city-dwellers leave home for their summer holidays.