The seven-time Formula One world champion suffered a near-fatal brain injury in a 2013 skiing accident in the French Alps.
At least 26 weather-related deaths have been reported in parts of Europe this month.
Victim understood to be 34-year-old Marc Sutton.
Two other skiers also fell.
'They fell several hundred metres to their deaths.'
Now probing 'random killer' theory.
Investigators have admitted they still have no idea why a British engineer and his family came to be gunned down during a
Five more are missing.
At least four people have been killed and five others are missing following an avalanche in the French Alps on Monday. Emergency