French Journalist Alexander Aucott has taken this image showing the damage to the Smoking Dog pub in Lyon.
Witnesses described a group of up to 50 masked men, some making Nazi salutes.
Three people are reported to be in hospital, one with a head injury.
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It is a murky picture across the UK and for most of the country it will stay dull and damp with extensive mist and fog overnight.
Police release CCTV of two suspects, one wearing a Scream mask, suspected to have been involved in a sexual assault on Halloween.
A £3.6m haul of cannabis has been found stuffed in more than 1,000 tins of olives in Ireland.