Winston Peters is refusing to apologise for his extraordinary attack on the former Prime Minister Jacinda Ardern - in which he wrongly accused her office of hiding information from the public about the March 15 terror attack.
In a social media post last night, the New Zealand First leader said that yesterday was "the first time" we'd learnt that the PM's office received information about the massacre before it took place.
In fact, her office was sent the terrorist's manifesto less than 10 minutes before the first shots were fired - a detail revealed and widely reported one day later.
Labour is demanding the former deputy Prime Minister remove the tweet, labelling it bizarre and clearly inaccurate - but to no avail.
Mr Peters has refused RNZ's interview requests, and his potential coalition partners National and ACT are also keeping quiet.
Here's our deputy political editor Craig McCulloch.
