As many as 11,700 records in the emergency department at the Canberra Hospital have been tampered with. The corruption has taken place between 2009 and 2012, revealed the report.

Auditor-general Maxine Cooper has been investigating the case and has found a senior official involved in the corruption. The official has accepted that she was involved in the tampering and has apologized for the same.

The official said that she was not alone and had support of other officials as well. She further affirmed that she would not have ever done such thing, if she would not have been facing a lot of pressure in the hospital.

''The environment in the executive at Canberra Hospital has increasingly become one where I felt fearful for myself and for other people that I work with", said the guilty official.

Coopers was of the view that the officials involved in the case have tampered data to such an extent that reduced the waiting times from 89 minutes to 28 minutes.

Andrew Miller, who is the president of Australian Medical Association, said that he is quite distressed to know that hospital staff has committed such a big blunder and moreover, they cheated, which is unacceptable.