Eimiller, the FBI spokeswoman, said the investigation overall remains open, with interviews continuing as well as the search for evidence.

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Goldman Sachs reckons that FCPA violations typically cast a three-year cloud over a company under investigation, and that the overall cost can reach 9% of profits before interest, taxes, depreciation and amortisation over that period.

ECONOMIST: Walmart

Investigators are looking into whether the addition of ingredients like guarana another source of caffeine violates laws that ban putting multiple sources of caffeine in one beverage without disclosing the overall amount, according to the person familiar with the investigation.

WSJ: Energy-Drink Makers Face New York Probe

But the overall accounts were qualified because information on MPs still under police investigation was withheld by Mr Jack - the Commons chief accounting officer, who has since retired.

BBC: Watchdog refuses to sign off Commons accounts

That an officer in overall command from an outside police force be appointed to carry out the investigation of the potentially linked terrorist incidents identified in the Omagh bomb review report.

BBC: 'Flawed judgement' over Omagh