CNN correspondent Jim Acosta suggested President Trump's press conference Thursday in Poland was a "fake news conference" because he called on a reporter who is an "ally of the White House."

During the press conference, Trump chose Daily Mail reporter David Martosko, who has publicly said he spoke with Trump about a possible White House job, to ask a question.

Martosko asked Trump about potential military action against North Korea and also about the fallout of the president's tweet that included a video of him tackling a man with a CNN logo for a head.

Isn't it a "fake news conference" to take a question from a reporter who is essentially an ally of the White House? https://t.co/vD7DgAZXIv — Jim Acosta (@Acosta) July 6, 2017

Reacting on Twitter, Acosta said, "Trump finally held a news conference overseas. But he took a question from a friendly reporter and then attacked CNN as 'fake news.'"

One of the questions came from a reporter who acknowledged he had just talked to WH about a job last month https://t.co/45jABeralt https://t.co/kiquwvWIWe — Jim Acosta (@Acosta) July 6, 2017

In another tweet, Acosta said, "Isn't it a 'fake news conference' to take a question from a reporter who is essentially an ally of the White House?"

Trump also took a question from an NBC correspondent, who asked if Trump would definitively state whether he believed Russia interfered in the U.S. election.

Tensions between Trump and CNN have been on high in recent weeks, after a series of missteps by the network, including a retracted story related to one of Trump's associates and Russia.