A One Nation candidate supposedly "caught" handing out LNP how-to-vote material has accused Labor of gutter tactics in a bid to stitch up her party.

A Labor staffer on Monday gave reporters photos that appeared to show a One Nation person, dressed in the party's trade-mark orange t-shirt, handing out LNP how-to-vote cards at a pre-polling station in the Brisbane electorate of Lytton.

Labor frontbencher Cameron Dick on Tuesday put out a press statement titled: "Nicholls' LNP collusion with One Nation to continue at pre-pool booths".

Mr Dick said there'd been a deafening silence from LNP leader Tim Nicholls overnight, and that he'd failed "to put an end to One Nation volunteers handing out LNP how to vote material, as happened yesterday in Lytton".

It's since emerged the photos feature One Nation's Lytton candidate Suzanne Black.

The long-serving policewoman has accused Labor of a desperate bid to suggest there's a secret alliance between One Nation and the LNP.

Ms Black said she was secretly photographed while trying to recycle a used LNP how-to-vote card by handing it back to that party's volunteers at the pre-polling booth.

"We've only got limited how-to-vote cards and we go through them and then hand them back to Liberal or to Labor. That's what I was doing. I had no idea I was being photographed," she told AAP.

"My normal job is as a police officer. I'm learning very fast that this is a very dirty game and Labor are playing very dirty."

Mr Nicholls said he knew nothing about the incident when asked about it on Monday, and on Tuesday said his office had not been able to confirm it had happened.

A Labor volunteer, associated with party's Lytton candidate Joan Pease, has admitted taking the photos and passing them on to the ALP's campaign headquarters.

But the volunteer, who didn't want to be named, insisted Ms Black was handing out LNP cards, and at one point was heard to tell an LNP volunteer it was "because you're preferencing us".

"When voters were coming across, they thought it was bizarre that someone in One Nation was handing out the LNP cards as well," the Labor volunteer told AAP.

One Nation on Tuesday announced it had banned online sales of its campaign t-shirts until after the Queensland election, with Senator Pauline Hanson's chief-of-staff saying the party had been warned Labor might be planning to use them in an underhanded way.

"We can't run the risk of any more Labor people getting these shirts," he told AAP.