The DPP has told the Banking Inquiry not to hear evidence from former Anglo boss David Drumm by video link.
Mr Drumm had agreed to be interviewed by the committee on Wednesday via video link from the US, where he now lives.
But the Director of Public Prosecutions has told the committee not to hear his evidence in this way.
Independent TD for Dublin South Shane Ross says the Banking inquiry has become a waste of time and a political farce.
"People are absolutely fed up with the Banking Inquiry, it's a complete political farce," said Deputy Ross.
"What has happened is exactly as was predicted by some of us before it started, that this was a desperately cynical operation by Fine Gael and Labour to crucify Fianna Fail before the general election, and that is what it's turned out to be."
"It's backfired, as it happens, but that was the purpose of it," he said.