Medibank Private Ltd, Australia's biggest health insurer, said on Thursday hackers had released more of its stolen medical records, as the media reported that the complete set of data on millions of customers was now public. The Office of the Australian Information Commission (OAIC), the country's privacy regulator, has also begun investigating how the company handles personal information, Medibank said in a statement. For the latest headlines, follow our Google News channel online or via the app. The latest release on the dark web follows progressive uploads, including records of customers' mental health and alcohol use, that began after Medibank said on November 7 it would not pay a ransom. "The raw data we have analyzed today so far is incomplete and hard to understand," chief executive David Koczkar said. "While there are media reports of this being a signal of 'case closed,' our work is not over."