National Party leader Judith Collins wants the Government to release the advice it received that prompted Auckland's move to alert level 3.
Collins told Morning Report she believes the government would have felt it had to move down a level, but she wants to know more.
"I've always said that the government shouldn't be treating New Zealanders as they were mushrooms to be kept in the dark.
"They should release the advice, the public health advice that they received. They have not released it, and I think that would give a far clearer picture."
Covid-19 Response Minister Chris Hipkins told Morning Report he couldn't say that a recent rise in cases caused the level change.
Collins told said the problem is that the public can't see the official advice yet.
She does agree with Hipkins that the longer people are locked down, the more they feel they can break the rules.
"The longer you keep people locked down, the more likely it is that people are going to feel that they simply can't continue following the rules to the degree that they [the government] want to.
"So, that's their problem, release the information, have a plan that people can work to, get as many people vaccinated, get them the saliva test and get the rapid antigen testing, get the ICU units ready and actually prepared."
