Several chess Grandmasters, including India's Srinath Narayanan and Nihal Sarin, have claimed that cyberbullying by former world champion Vladimir Kramnik led to American chess Grandmaster Daniel Naroditsky's death. They have urged FIDE to take action against Kramnik. "He really needs to pay for what he’s doing to others," Sarin said. "FIDE must act," Narayanan tweeted.