Employees of Deutsche, HSBC, Societe Generale said to be under investigation.

Investigation of interest-rate manipulation has touched up to 18 financial institutions.

Investigation of interest-rate manipulation has touched up to 18 financial institutions.

Washington office is now litigating 90 cases, up more than 50% from year ago.

Washington office is now litigating 90 cases, up more than 50% from year ago.

Traders may have been able to manipulate global interest rates.

Traders may have been able to manipulate global interest rates.

Agency asks for documents on how PE firms value assets.