The former staff member is suspected of stealing customer data belonging to the financial company.
SunTrust says a former employee may have stolen about 1.5 million customers' data and shared it with a "criminal third party."
Chairman and CEO William Rogers Jr. made the announcement Friday as the regional bank released its quarterly earnings.
Rogers said the former employee tried to print the customer data. The information included names and account balances, but not Social Security numbers, account numbers or passwords.
The bank has not identified "significant fraudulent activity" on the...
SunTrust is offering free identity protection to current and new customers.