Investigators are examining footage from a small camera which was attached to Michael Schumacher's helmet France's BFM TV channel reported, after his family handed the camera over.
Investigators also interviewed his son, who said he was with Schumacher at the time of the accident.
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Restrictive policies have been branded “totally unacceptable”.
The quake was measured at magnitude 6.1.
Hundreds of services have been cancelled or significantly delayed since schedules were changed on May 20.