Senator LUDWIG (Queensland—Minister for Agriculture, Fisheries and Forestry and Minister Assisting on Queensland Floods Recovery) (14:51): There is a matter that is under police investigation. It would be inappropriate to comment in detail on the specifics of the Sylvania Waters licensed post office. However, I can say, on the measures Australia Post has in place for the security of its network and staff, Australia Post conducts pre-employment and pre-engagement criminal history checks on all applicants for work as employees, as labour hire employees, as post office licences and as mail contractors or subcontractors unless they have an existing criminal history check. These checks are done through CrimTrac by staff with access to the national police checking service. These employees' criminal checked histories date back to pre-1975. What we have is comprehensive work undertaken by Australia Post in this area to ensure the security of our mail centres. (Time expired) Honourable senators interjecting— The PRESIDENT: Senator Sherry, Senator Cash, if you wish to debate it, debate it after question time. Senator Di Natale is on his feet waiting for his question.