My question is to the Attorney-General, Senator Brandis. Attorney, I refer to the letter sent to the Prime Minister by the Secretary of the Department of the Prime Minister and Cabinet, Mr Thawley, which stated that the Monis letter of 7 October 2014 would have made no difference to the findings of the Martin Place siege inquiry. When was contact about the letter first made between the Attorney-General's Department and the Department of the Prime Minister and Cabinet? When was the Department of the Prime Minister and Cabinet first advised that the Attorney-General's Department provided misleading evidence to the parliament?