CoinWorld reports that on April 4th, the prediction market Polymarket delisted related event contracts concerning the fate of a missing American pilot, stating that the content violated the platform's "Integrity Standards" and should not have been published. The platform is currently reviewing its internal review process. The incident has sparked widespread controversy; previously, the market was betting on whether the pilot would be rescued, with over 60% of users betting that rescue would not occur in the short term. However, as of now, Polymarket has not clarified the specific violations, raising questions about the transparency of its rules.