The LNP has expelled its north Queensland MP Jason Costigan saying it was a unanimous decision to give him the boot.

It comes less than 48 hours since he was suspended over a harassment complaint.

The party's state executive made the decision after holding a meeting at its headquarters in Brisbane this morning.

Acting party president Dave Hutchinson said while the decision might impact the party's chances at the 2020 state election, it was the right move to make.

"The LNP fully recognises the significance of this action and understands that removing a sitting MP will make the challenge of winning the next state election much more difficult," Mr Hutchinson said.

"However we expect our elected representatives to meet the highest standards."

Party leader Deb Frecklington called on her former colleague to resign.

"As of today Mr Costigan is no longer a member of my team and is no longer a member of the LNP," she said.

"I have very high standards for my team — Mr Costigan does not meet those standards.

"It's been about a week from the beginning of the complaint to the end of the complaint.

"He has disgraced the office and he should go now."

Party leader Deb Frecklington has called on Mr Costigan to resign. ( AAP: Darren England )

The decision leaves the MP without a party and essentially an independent.

Mr Costigan fronted the media yesterday calling his party's moves against him as a "stitch-up".

"I went down there [to meet with party members] on Sunday because you know what, I thought 'they're not happy about how I've stuck the boot into [Prime Minister] Scott Morrison'," he said.

Earlier this week the party revealed it had received a complaint from the family of a woman in relation to Mr Costigan.

He strenuously denies he acted inappropriately towards her, saying the allegation was "baseless".

"I can look you all in the eye and say it's utter crap — nothing bad happened, nothing sinister happened," Mr Costigan said.

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Mr Costigan showed the media a picture he took with the woman at the time, saying she did not look intimidated.

"Yes, we took some selfies — how many of you people know I love a selfie and love a photo and put the old arm around?" he said.

"It's about my name and reputation here.

"I know it's going to be a case of trial by media — I didn't come down in the last shower of rain.

"I can look you all in the eye and say these are baseless allegations and we will be pursuing the matter through the courts like there's no tomorrow."

Mr Costigan said he planned to sue for defamation over some of the comments made surrounding his suspension.

Ms Frecklington took aim at Mr Costigan for showing images of the woman to the press.

"I was horrified yesterday that Mr Costigan chose to release a photo of this young woman," she said.