Bahamian bank Deltec Bank & Trust Ltd is accused of providing billions of dollars worth of "secret" short-term credit to SBF to purchase Tether, according to a lawsuit filed in a Florida federal court on Friday, Bloomberg reported. The documents also allege that Deltec helped SBF misappropriate client funds by transferring funds between FTX and Alameda accounts. It is reported that SBF-owned companies began opening accounts with Deltec in 2018, in part to make it easier to obtain Tether. According to the lawsuit, Alameda simply transferred funds from its Deltec account to Tether's account to purchase the tokens. Starting in 2021, Deltec gave Alameda a three-day grace period to pay for its purchases of Tethers, effectively providing the fund with a short-term credit line. The bank did not offer a grace period to other clients, and a Deltec executive told Alameda's traders to keep it confidential. This "secret line of credit" sometimes exceeds $2 billion. Alameda then sells these tokens to make a profit. Desiree Moore, a lawyer for Deltec, said the bank and its chairman, Jean Chalopin, had no knowledge of FTX's misconduct before it became public.