One Nation leader Pauline Hanson said she has not watched an Al Jazeera documentary she has accused of being "heavily edited" and "dubbed".

In the documentary, which aired on the ABC last night, Senator Hanson appeared to suggest a government conspiracy on the Port Arthur massacre .

Senator Hanson fronted the media yesterday , but refused to answer any questions. However, in an exclusive interview with Today which was recorded just hours later, Senator Hanson said she "haven't had time" to watch the full documentary.

Senator Pauline Hanson. (Nine/Today)

The complete documentary was uploaded to YouTube yesterday morning, more than six hours before the interview.

She accused Al Jazeera of overdubbing the questions of undercover journalist Rodger Muller.

"What I know from that, I don't see his face or lips moving," Senator Hanson said.

"I feel this has been dubbed out. It has been cut and pasted so many times."

Today 's Deborah Knight also asked: "We see your face. We see the words coming out of your mouth. It's on tape. You can't deny they were the words that you said."

To which Senator Hanson replied: "I know."

Pauline Hanson appeared to suggest the Port Arthur massacre was a government conspiracy. (AAP)

She also accused Muller, who she believed to be a gun lobbyist, of repeatedly asking the same question.

"He kept asking me questions then he would give a break then come back to the same question," she said.

"He said a lot of things, until he got the answer that he wanted."

Senator Hanson denied that she believed the Port Arthur massacre was a government conspiracy.

"When I got into Parliament, I was only in there a month and the massacre happened just after that, if I really thought it was a conspiracy theory I had two and a half years on the floor of Parliament to have spoken up and said that," she said.

"I never said at all it was a conspiracy theory."

In the Al Jazeera video, Senator Hanson is heard saying she had "a lot of questions" about Port Arthur.

"An MP said it would actually take a massacre in Tasmania to change the gun laws in Australia," Senator Hanson told Al Jazeera reporter Rodger Muller.

"Haven't you heard that? Have a look at it. It was said on the floor of parliament.

"I've read a lot and I have read the book on it, Port Arthur. A lot of questions there."

An anti-gun rally in Hobart in the wake of Port Arthur. (AAP)

Senator Hanson could not recall the name of the book, but remembered it was "light blue".

She said she was sent it when she was no longer in Parliament.

Ms Hanson said the documentary was a political attack by a foreign power, adding the undercover reporter put words in their mouths.

She said there was no plans to water down Australia's gun laws.

The Port Arthur massacre led to the introduction of strict new gun laws in Australia. (AAP)

"I tell you what, this was a sting. It was set up to discredit One Nation," she told Today. "The media have portrayed that we actually went to the NRA for funding for money, which was never the case.

"They say we wanted to water down the gun laws. Never ever the case."

One Nation's website lists 21 reforms to Australian gun laws, including reducing waiting times for buying handguns.

It also abolishes the "genuine need" test for each individual gun purchase, meaning an already licenced person can buy as many similar firearms as they like.

One Nation also wants to allow people to buy ammunition for guns they do not legally own.

As a consequence of the Al Jazeera report, Prime Minister Scott Morrison declared the Liberals would preference Labor above One Nation.

Senator Hanson called Mr Morrison a "fool" over his decision.

"He has not really waited to see the full information that's come out," she said.

"Has he contacted ASIO or the Federal police that I have actually put this this across to them it should be investigated for what it is?

"This is political interference from a foreign government."

Pauline Hanson with James Ashby and Steve Dickson. (AAP)

Labor frontbencher Tony Burke told ABC Radio that One Nation's party is built on hate.

"It’s another layer of conspiracy theories. The Al Jazeera conspiracy theory. The Port Arthur conspiracy theory. Takes us back to when we had the vaccination conspiracy theory," he said.

"It's what Pauline Hanson trades in."

Mr Burke said concerns about journalists operating undercover was a "valid discussion", but doesn't change how One Nation responded to it.

"Nobody made them or forced them or entrapped them into asking for millions of dollars from the National Rifles Association," he said.