Critics have called out the New South Wales government after hundreds of medical files were found in an abandoned run-down building south of Sydney.

After investigations uncovered the privacy breach, New South Wales Health responded that the site was covered in warning signs of asbestos, and that the former Garrawarra Centre for Aged Care in Helensburg was illegally trespassed.

Sources close to the ABC said the building was not secure and that the public had been accessing the site.

The Australian Privacy Foundation’s health committee chair Dr Bernard Robertson-Dunn said that for New South Wales Health to “claim the site was (accessed illegally) is a little weak”.