PARIS :The world chess federation (FIDE) said on Wednesday it was addressing former world champion Vladimir Kramnik's public attacks on U.S. grandmaster Daniel Naroditsky, whose sudden death this week at 29 has prompted outrage and calls for action.

The cause of Naroditsky's death has not been made public.

FIDE CEO Emil Sutovsky told Reuters the organisation was "looking into" Kramnik's year-long campaign accusing Naroditsky of online cheating.

Naroditsky, a popular commentator and streamer, denied any wrongdoing and appeared visibly distressed in his final Twitch broadcast last weekend, where he referred to the toll the controversy had taken on him, according to the now-deleted video.

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