ASIO officers are reported to have visited the ABC’s Brisbane studios around 1am this morning.

The officers sought to secure the classified Cabinet documents recently discovered in two locked filing cabinets at a second-hand furniture depot in Canberra.

This huge national security breach is said to be the largest of its kind in Australian political history and while the ABC still has access to the documents, negotiations are currently underway between the national broadcaster and the Department of Prime Minister and Cabinet.