Optus has confirmed that police have arrested a former Optus employee who broke into an Optus program database.
According to a company spokesperson the former employee "caused no damage to the program database and did not gain access to any customer details".
The company did not elaborate on what database was hacked.
This police investigation is totally unrelated to the Optus hacking incident in December when hackers hijacked the account details of 400,000 Optus Internet dial-up customers. That investigation is still underway.