RTX28RSB Donald Trump in Forth Worth, Texas on Friday. REUTERS/Mike Stone

Jeff Bezos may want to get that rocket ready.

Donald Trump, the Republican frontrunner, attacked the Amazon founder and CEO during an appearance in Texas on Friday, saying that if he becomes president, Amazon is "going to have such problems."

Trump accused Bezos of buying the Washington Post so Amazon would benefit from the "political influence" of the newspaper.

Here's what Trump said about Bezos, according to the clip from CNBC, available below:

"I have respect for Jeff Bezos, but he bought The Washington Post to have political influence, and I gotta tell you, we have a different country than we used to have," Trump said. "He owns Amazon. He wants political influence so that Amazon will benefit from it. That's not right. And believe me, if I become president, oh, do they have problems. They're going to have such problems."

Bezos bought The Washington Post in 2013 for $250 million through his personal investment company. It's a separate company from Amazon.

Amazon did not immediately return a request for comment.

Bezos, however, has responded to Trump's taunts in the past. In December, Trump sent a series of tweets accusing Bezos of using The Washington Post as "tax shelter" for Amazon. (Experts disagreed with Trump's assessment.)

In response, Bezos suggested that Trump take a trip to space on a rocket made by Blue Origin, another company founded by Bezos.

Trump last week called on people to boycott Apple over the company's refusal to give the FBI access to the phone that belonged to the San Bernardino shooter.

Watch Trump in this clip from CNBC:

Disclosure: Jeff Bezos is an investor in Business Insider through his personal investment company Bezos Expeditions.