President Trump said on Saturday he believes Russian President Vladimir Putin's denials that his country meddled in the 2016 U.S. election and he dismissed intelligence heads who claim otherwise as "political hacks."

Speaking to reporters on Air Force One, Trump said: "They're political hacks. So, you look at it, and then you have Brennan, you have Clapper, and you have Comey. Comey's proven now to be a liar, and he's proven to be a leaker. So, you look at that. And you have President Putin very strongly, vehemently says he had nothing to do with that. Now, you are not going to get into an argument, you are going to start talking about Syria and the Ukraine."

John Brennan is the former director of the CIA, James Clapper is the former director of the national intelligence, and James Comey is the former director of the FBI.

Multiple U.S. intelligence agencies concluded in January that Russia interfered in the 2016 election, though Trump has repeatedly cast doubt on their findings.

Trump met Putin at the Asia-Pacific Economic Cooperation forum in Da Nang, Vietnam, and told reporters that he asked the Russian president about the issue.

"Every time he sees me, he says, 'I didn't do that,'" Trump said. "And I believe, I really believe, that when he tells me that, he means it."