Richard Causey, the last of the top Enron Corporation executives to learn his punishment, has been jailed for five-and-a-half years for his role in one of the biggest corporate scandals in US history.

WorldCom Inc executives earned $104m (€107m) in salaries, bonuses, and share sales even as the bankrupt telecoms group was using questionable accounting techniques to inflate its earnings by billions of dollars, the Financial Times reported in its online edition, without citing sources.