One Nation leader Mark Latham has told NSW Parliament that disgraced former MP Daryl Maguire had a key to Gladys Berejiklian's north shore home for many years and accessed it as he pleased.
In upper house question time on Thursday, Mr Latham said the Premier had maintained "she's a very private person", despite giving recent interviews to a "newspaper gossip writer and Kyle Sandilands".
"Given that Daryl Maguire had a key to the Premier's north shore home for many years, and while cohabitating came and went as he liked as recently as last month, doesn't this demonstrate an intimate personal relationship and the Premier's failure under the ministerial code of conduct to declare all of Daryl Maguire's business interests," Mr Latham asked.
The ICAC is investigating whether Mr Maguire, the former MP for Wagga Wagga, used his position has a member of Parliament for financial gain, including brokering property deals.
Labor leader Jodi McKay later asked Ms Berejiklian in Parliament: "Given revelations that Daryl Maguire had a key and access to your home for several years, including as recently as last month, why did you breach your own ministerial code of conduct by failing to disclose this relationship."
Speaker Jonathon O'Dea initially attempted to stop the question, citing "suppression orders that ICAC has made in terms of restricting publication".
However, after the Premier indicated she wanted to respond, Mr O'Dea allowed the question.
"I've read and heard things, including today, which are just factually incorrect," Ms Berejiklian said.
"But I will say this, I respect the process, I have faith in the process and and I ask everybody to have faith in that process, of which I was a witness."
In Ms Berejiklian's evidence to the Independent Commission Against Corruption last week, she said her most recent conversation with Mr Maguire was on September 13.
Ms Berejiklian told the ICAC she had made it clear to Mr Maguire that their relationship was over after she gave private evidence to the agency on August 16.
The Premier told the ICAC she had been in a "close personal relationship" with him for five years.
It also heard revelations that Ms Berejiklian knew Mr Maguire was receiving commissions for brokering property deals as far back as 2014. Several phone calls intercepted by the ICAC also revealed Mr Maguire extensively discussed his personal finances with Ms Berejiklian.
Mr Latham's question came after Ms Berejiklian did a round of media interviews earlier in the week, which included revealing she was in love with Mr Maguire and hoped they would marry.
But she also said he "wasn't my boyfriend" and she did not think the relationship was serious enough to warrant introducing Mr Maguire to her family or friends.
Speaking to Ben Fordham on 2GB on Monday morning, the Premier said her five-year relationship with Mr Maguire – which she described at the ICAC inquiry into his conduct in office as a "close, personal relationship" – was not anything of note.
"It wasn't a normal relationship," Ms Berejiklian said.
"He wasn't my boyfriend. He wasn't anything of note. I certainly hoped it would be ... [but] because I'm not the sort of person who'd been in a long-term relationship, I didn't want to introduce him to my social circle."
The leader of the government, Don Harwin, took Mr Latham's question on notice. The Premier's office has been contacted for comment.
Mr Latham has repeatedly said Ms Berejiklian's actions were worthy of her resignation and indicated he would not support government legislation if she remained leader.