Several leading international banks have received subpoenas from US regulators investigating one of the complex securities markets at the heart of the financial crisis, people familiar with the probe say.
The Securities and Exchange Commission sent subpoenas last month to banks including Goldman Sachs, Credit Suisse, Citigroup, Bank of America/Merrill Lynch, Deutsche Bank, UBS, Morgan Stanley and Barclays Capital, these people said. Requests for information were also made by the Financial Industry Regulatory Authority, which oversees broker-dealers.

US 