Mick Wallace claims Irish politicians "do not want to know what happened"
A newly-established whistleblowing website has received six contacts made in the past few days.
namaleaks.com was launched earlier this week hoping to "uncover possible injustice and malpractice" related to the National Asset Management Agency (NAMA).
It has been supported by TD Mick Wallace, who is listed as director, along with Clare Daly, assistant UCD Professor Julian Mercille, former environment editor with the Irish Times Frank McDonald and financial consultant Cormac Butler.
The developers say it has been established in collaboration with the Freedom of the Press Foundation and experts who work extensively with US whistleblower Edward Snowden.
It also offers people tips to the public on how to leak information.
It gives advice such as: "Don't contact us from work. Government and company networks often log traffic.
"If you want to leak us documents that exist in your work, first remove them from work and submit them using a personal computer on a different network."
Deputy Wallace says three of the contacts have been anonymous, while three are not.
He says he is hopeful of an eventual Irish commission of investigation into 'Project Eagle' - the sale of NAMA loans in Northern Ireland.
"People are saying 'Oh, there's an investigation in the North, there's an investigation in America - we can't interfere with those'," Mr Wallace told Newstalk Breakfast.
"But the truth is that the British National Crimes Agency are looking at players from their jurisdiction that may have been involved in Project Eagle, the Securities and Exchange (Commission) in America are looking at American companies that may have been involved in Project Eagle and who may not have behaved as well as they should.
"There's actually nobody at the moment looking at the workings of NAMA in terms of an investigation - the politicians in the south do not want to know what happened," he added.