One of the state’s most powerful figures and the woman touted as a future Labor leader stepped down on Sunday.

The shock resignation paved the way for Health Minister Steven Miles to be promoted to deputy premier and Cameron Dick as Treasurer.

Premier Annastacia Palaszczuk announced Trad’s resignation and her new-look cabinet on Sunday, less than 24 hours after her former deputy said she was only temporarily standing down from her duties.

“I’ve acted swiftly and decisively,” Palaszczuk said.

She added the new appointments were permanent and would remain in place until the state election in October.

“I’m not going to look backwards, I’m focused on the future,” she said.

“This is 100 per cent what Queenslanders expect of myself and my team, to be focused on dealing with the health and economic crisis we have before us.”

Queensland’s Crime and Corruption Commission is investigating Trad over allegations she interfered with the selection process for the principal of a new high school located in her South Brisbane seat.

Trad denies the claims and said she “never expressed a view to anyone on who should fill that role”.

Palasczcuk said her former cabinet colleague’s decision to resign was based on the best interests of her family, the community and the party.

“She does not want there to be any distraction for the government as we respond to the COVID-19 crisis,” she said.

This is the second time in recent history Trad has been investigated by the state’s corruption watchdog.

It was revealed in late 2019 she had failed to properly declare the purchase of a $695,500 home in March of that year.

The property was located in the inner-Brisbane suburb of Woolloongabba, near one of the stations being built as part of the Cross River Rail project she was overseeing at the time.

The CCC found no evidence to support a reasonable suspicion of corrupt conduct, but it did push for changes to the way conflicts are dealt with and the introduction of criminal penalties.

Opposition Leader Deb Frecklington said Trad should’ve been sacked after the first probe.

“Annastacia Palaszczuk leads a government that is riddled with integrity issues, and it starts at the top,” she said.

Trad still intends to contest the seat of South Brisbane in October.

The Premier would not be drawn on whether she supported Trad to stand again, except to say: “I support all of my team recontesting the next election.”

Queensland’s new-look cabinet, which features a new face in Gladstone MP Glenn Butcher, will be sworn in on Monday.