Marco Simoncelli has tragically died due to injuries sustained on the second lap of the Malaysian MotoGP at Sepang.
The Italian fell from fourth place after losing the front of his motorcycle through the right-hand turn 11.
Instead of sliding straight off the race track, as is normal, Simoncelli was then dragged by his bike - which had regained grip and was partially upright - as it veered back across to the inside of the track.
Lying sideways and still facing forwards, the Gresini Honda rider was then hit from behind by Colin Edwards and Valentino Rossi, who had no chance to avoid the sliding #58.
Simoncelli's helmet came off during those impacts, which occurred at almost the same time and left Simoncelli motionless on the track. The race was immediately stopped and later cancelled so that medical staff could continue to focus completely on treating the Italian in the medical centre.
Sadly, Simoncelli succumbed to his injuries at 16:56 local time.