Major Wall Street banks face a probe into mortgage securities deals
The banks have been summoned to submit documentation to New York's attorney general.
They could face criminal or civil charges if investigators decide there's enough evidence.Wall Street giant Morgan Stanley is among those in the spotlight. Earlier reports had it that US federal prosecutors are investigating if the merchant bank misled investors to the tune of up to $400 million. In the light of the news, Morgan Stanley shares are falling in pre-market trading.