Covering up all the loopholes of a crime when your pals are guilty can take longer than when there is no evidence of a crime.
The Commodity Futures Trading Commission said in a brief statement it has analyzed more than 100,000 documents in its investigation, interviewed dozens of witnesses, and obtained expert advice.
"It has been a long, detailed, and thorough investigation, and it continues in an appropriate and considered manner," the agency said in its statement. (Reporting by Roberta Rampton)
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