Three Tottenham fans have reportedly been taken to hospital after a group of up to 50 masked thugs attacked a pub in Lyon.
Eyewitnesses say the attackers smashed doors and threw objects.
Around 150 Spurs fans were inside, ahead of their team's Europa League match tonight in the French city.
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Mayor of London Sadiq Khan is backing the scheme.
A spokesperson said the lightning strikes had left the "aircraft fuelling system unavailable."
Nearly 1,000 properties have been left without power, and road users have been warned of potentially hazardous conditions.