Prime Minister Jacinda Ardern's office has called a press conference at 11am.
It won't say what the press conference is about.
National leader Judith Collins says she's had a tip-off about inappropriate behaviour by a current Labour Minister.
She says she's passed it on to the Prime Minister's office, which says it has no comment 'at this stage'.
Newstalk ZB political commentator Barry Soper told Kerre McIvor the PM is expected to talk about the allegations Judith Collins has made today.
“This has got to be quite a serious issue for the PM to be holding a news conference in the way she is doing.”