The battle between Jeff Bezos and Donald Trump continues.

Bezos, the founder of Amazon (AMZN) - Get Report and owner of The Washington Post, hit back at recent comments made by the presumptive Republican nominee about his businesses, saying while at a technology conference Wednesday that Trump's attacks are "not an appropriate way for a presidential candidate to behave."

He addressed the issues of freedom of the press, Amazon's practices and the presidential race while at a Post-sponsored "Transformers" event. The comments came in response to accusations leveled by Trump last week that Bezos utilizes the Post to manipulate tax policy and that his e-commerce company has an unfair tax advantage and employs monopolistic practices.

Bezos appears unfazed by Trump's remarks, including comments made earlier this year that Amazon is "going to have such problems" with him in the White House.

"I'm very, very comfortable with all of Amazon's approaches and behaviors, the way we pay taxes, the political positions we take are very focused on our business and highly appropriate, and I have [said] I think a company like Amazon also deserves to be scrutinized and examined and criticized, and I have no worries about that, I have absolutely no worries," he said.

He added he would have no qualms about anyone diving into Amazon's tax practices. "It's our job to do that right so we can pass with flying colors that kind of scrutiny," he said.

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Bezos, who bought the Post for $250 million in 2013, also discussed the publication's journalistic practices and the importance of freedom of the press and speech in America.

Much of the world's population live in countries where citizens can be jailed for criticizing their leaders, whereas the United States has some of the most strongest free speech protections in the world, Bezos noted. He added that it is critical that political candidates, presidential and otherwise, be carefully examined.

"The citizens in this country make decisions, and that's how it works in a democracy, and they need information to make those decisions," Bezos said, referencing the Post's report about John Miller, the fake name Trump used years ago when masquerading as a publicist for himself. "It's still the citizen's decision how to weight that, they may decide that it's fine to pretend to be your own publicist, and if they do, that's fine."

The Post has assigned 20 staffers to dig into Trump's past and present and also has plans for a book on the former reality television star, associate editor Bob Woodward revealed recently, according to The Washington Examiner.

Last week, Martin Baron, executive editor at the publication, clarified that Bezos played no role in such decisions.

"As the individual who oversees The Washington Post's news staff, I can say categorically that I have received no instructions from Jeff Bezos regarding our coverage of the presidential campaign -- or, for that matter, any other subject," he said. "The Post has a long tradition of publishing thorough examinations of the major-party nominees for president. The decision to write a book on Donald Trump came entirely from the newsroom."

Bezos and Trump have traded numerous barbs this election season, and it is unlikely that this latest exchange will be the end of it, especially if the Post stories keep coming.

And thus far, Amazon investors appear unconcerned about Trump's threats: its stock has climbed nearly 10% over the past month.