The former chief financial officer of Refcopleaded guilty Wednesday to a $2.4 billion fraud in a criminal case stemming from the 2005 collapse of the futures and commodities broker.

Former CFO Robert Trosten's plea came less than a week after former Chief Executive Phillip Bennett also pleaded guilty to fraud and less than a month ahead of their trial. The case had drawn comparisons to the accounting fraud that drove telecommunications company WorldCom into bankruptcy.