NZ First MP Winston Peters was booted out of Parliament after claiming Justice Minister Judith Collins failed to declare travel costs paid for by the Chinese government.
For days, Peters has been claiming he has a smoking gun that would see Prime Minister John Key sack Collins.
But in farcical scenes during Question Time, it took several attempts for him to make the allegations, as he was blocked by Speaker David Carter.
His stumbling caused Key to remark: ''I don't understand the information that the member has got or the allegation... if the member could just speak a bit more clearly it might help everyone including the media.''
Eventually Peters tabled a cabinet report which he says show Collins failed to list ''substantial'' travel, accommodation and other costs met by China in the MPs register of pecuniary interests. He said Key knew about the contributions.
He was later asked to leave by Carter, when he interjected during a point of order by Leader of the House Gerry Brownlee.
Outside, Peters said the Chinese Government, not its Parliament, paid the bills.
''She has failed to disclose to the public, and the media, via the registrar at the end of January this year. And yet on November 7 she is telling the Prime Minister about those benefits in that Cabinet paper.
''This is just compounding itself. She has made deceitful statement after deceitful statement. They have all proved to be bunkum and here is another one. And there is more to come.''
He rejected the idea it was an administrative error and plans to take the matter to Parliament's Privileges Committee.
Peters, who was sweating heavily while talking to reporters, says other ministers have declared travel paid for by other Governments. ''It's a series of smoking guns and this is one of them.''
Peters criticised Carter, saying his rulings ''were absolute legal drivel.''
''If he thinks he's going to shut me down he has got the wrong guy...it's game set and match in any games where facts matter.''
Collins is on stress leave after weeks of pressure over the Oravida affair. On a trip to China last year she met with executives from Oravida, a milk exporter of which her husband David Wong-Tong is a director.
MPs are required to required to declare: ''the name of each person who contributed (in whole or in part) to the accommodation costs incurred by the member while in the country,
They don't have to declare travel costs met by a government or parliament if they are on an official parliamentary visit. Collins was on a ministerial trip to investigate justice issues.
During Question Time, former NZ First MP Brendan Horan accused a political leader of operating a $2.5m slush fund.
Asked about the comment, Peters said it was a ''bare-faced lie.''
Earlier Key had said he would go on TV and apologise if Peters produced evidence that would see Collins sacked.
Will you be voting in this year's General Election?Related story: Map: Voter enrolment rates declining