Libor scandal: Seven banks summoned in US probe
Seven banks, including HSBC and Royal Bank of Scotland, are to be questioned in the US for alleged manipulation of the Libor inter-bank lending rate.
The other banks receiving subpoenas by the New York attorney general are Barclays, Citigroup, Deutsche Bank, JPMorgan and UBS.
Last month, Barclays was fined £290m by UK and US regulators for rigging Libor.
Zoe Conway reports.