By Summer Zhen, Vidya Ranganathan and Elizabeth Howcroft HONG KONG/SINGAPORE/LONDON (Reuters) – FTX was engulfed in more chaos on Saturday when the crypto exchange said it had detected unauthorized access and analysts said hundreds of millions of dollars of assets had been moved from the platform in “suspicious circumstances”. FTX filed for bankruptcy on Friday, one of the highest profile crypto blowups, after traders rushed to withdraw $6 billion from the platform in just 72 hours and rival exchange Binance abandoned a proposed rescue deal. FTX Chief Executive John J. Ray III said on Saturday…