A Polymarket user who won approximately $400,000 from a bet on the ouster of Venezuelan President Nicolás Maduro has vanished from the platform, raising concerns about potential insider trading. The account, identified as “0x31a56e,” placed a $32,000 wager on Maduro's removal just before news of his capture by U.S. forces broke. The account's page now returns an error, while other users' pages remain accessible. The account reportedly offloaded $437,000 in USDC shortly after the win, according to blockchain data. Polymarket has not commented on whether the account was deactivated intentionally or due to a technical issue. This incident adds to growing scrutiny over insider trading in prediction markets, with some U.S. lawmakers advocating for stricter regulations.