Staff at Trafigura Group worked with alleged fraudster Prateek Gupta to ensure that their dealings would not raise the suspicion of key lender Citigroup
Trafigura Staff Tried to Hide Nickel Red Flags, Messages Show bloomberg.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from bloomberg.com Daily Mail and Mail on Sunday newspapers.