Doctor Claudio Costa, part of the motorcycling world championship's medical team, told reporters the news.
Riders in the premier MotoGP class were also informed after their race.
"I found out now, when things like this happen nothing else matters," world champion Valentino Rossi told Mediaset television. "He was a lovely guy, it was a horrible accident."
Suter's Tomizawa was travelling at full speed when he fell off on a corner and was hit violently by the bikes of Alex De Angelis and Scott Redding, who both also tumbled but looked relatively unhurt.The race continued, despite the protests of television commentators who said it should be stopped, and was won by Spain's Toni Elias.
Moto2 is the new name for the former 250cc category below MotoGP. Tomizawa Shoya had been rushed to hospital but the accident has caused severe life Tomizawa Shoya can not be saved. We condole the death of the Japanese MotoGP Rider.
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