The race was immediately red-flagged. Simoncelli lay stricken on the track after the crash, his helmet having come off during the incident. He was taken by ambulance to the circuit's medical centre, but at 10:32 am local time it was announced he had died from his injuries.
The 24-year-old Italian lost control of his Honda at turn 11 four minutes into the race, but his bike regained partial grip and swerved across the track.
Simoncelli's fatality raised the number of recorded deaths in MotoGP to 47 since it was founded in 1949.
MotoGP race director Paul Butler pledged to investigate the circumstances surrounding the accident while Sepang circuit chairman Mokhzani Mahathir voiced his condolences and said it was unfortunate that a death occurred for the first time since the circuit opened in 1999.
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News source : http://www.telegraph.co.uk