Barclays has revealed its conduct is being investigated by the US Department of Justice (DOJ) and US Securities and Exchange Commission.
Both will examine whether the bank's relationships with third parties who help it win or retain business are compliant with the US Foreign Corrupt Practices Act.
More top news
Outbreaks of rain and strengthening winds will affect southernmost parts of England and Wales today.
An earlier debate on the issue was suspended as an 'expression of support' following the Westminster terror attack.
Five people were killed and dozens more were injured after a car and knife attack in the capital on Wednesday afternoon.