Agriculture Minister David Littleproud says he's asked the Auditor-General to investigate all water buybacks since 2008.
It comes as Labor demands the Department of Agriculture and Water Resources release all documents regarding an 80 million dollar water buyback in 2017 and says a judicial inquiry is needed.
Former Deputy Prime Minister and water minister Barnaby Joyce is defending his decision to approve the buyback, and says the Queensland Labor party had urged the government to purchase water from Eastern Australia Agriculture.
The company is controlled by Eastern Australia Irrigation, which has links to current Energy Minister Angus Taylor, and is based in the Cayman Islands, which is a well known tax haven.
Mr Joyce says he's confident the Auditor-General's inquiry will find he's done nothing wrong.
[Former Deputy Prime Minister Barnaby Joyce: "My role was never to actually select a purchaser or to determine a price. I'm quite happy if people want to basically test the veracity of what I'm saying to do so by whichever means they want."]
Opposition leader Bill Shorten says he won't cave to Adani coal mine activists or lobby groups if he becomes prime minister.
It comes as the Construction Forestry Maritime Mining and Energy Union [CFMEU] warns Mr Shorten against taking any action that could jeopardise the coal mine.
Mr Shorten, a former union leader himself, says he'll strictly follow the law and scientific consensus.
[ALP Leader Bill Shorten: "If I’m Prime Minister, I will adhere to the law of the land. I’m not going to be intimidated by environmental activists or big mining companies.
