An Australian Federal Police investigation has found a security lapse which led to the release of secret cabinet documents was the result of a series of human errors at the Department of Prime Minister and Cabinet.
In a statement, department boss Martin Parkinson says a number of public servants have been sanctioned over the sale of a pair of locked filing cabinets at a second-hand shop in Canberra, which stocked ex-government furniture in February 2016.
The filing cabinets were unlocked with a drill months later, and the A-B-C published a number of stories using some of the less-sensitive material.
The broadcaster later returned the documents.
A digital tracking system had been put in place to handle secure cabinets and officers are receiving extra training.
