Rogue trader Kerviel's bosses 'knew what he was doing'
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The police officer who led the investigation into the losses caused at French bank Société Générale by the rogue trader Jerome Kerviel has said she is certain his superiors knew of his activities. Nathalie Le Roy's testimony was published by the investigative website Mediapart. The revelations come as Kerviel is attempting to have the judgment against him thrown out.