French trader accused of 4 billlion euro fraud co-operating with police
The French trader accused of massive bank fraud is co-operating with police.
31-year-old Jerome Kerviel is undergoing his second day of questioning in connection with allegedly fraudulent trades at France's second biggest bank.
Societe General has said the trades cost it billions of euro during a week of market instability.
Mr Kerviel gave himself up to French police.