The White House has suspended the press pass of CNN correspondent Jim Acosta after he and President Donald Trump had a heated confrontation during a news conference.

They began sparring Wednesday after Acosta asked Trump about the caravan of migrants heading from Latin America to the southern U.S. border. When Acosta tried to follow up with another question, Trump said, "That's enough!" and a female White House aide unsuccessfully tried to grab the microphone from Acosta.

White House press secretary Sarah Huckabee Sanders released a statement accusing Acosta of "placing his hands on a young woman just trying to do her job as a White House intern," calling it "absolutely unacceptable."

The interaction between Acosta and the intern was brief, and Acosta appeared to brush her arm as she reached for the microphone and he tried to hold onto it. "Pardon me, ma'am," he told her.

Acosta tweeted that Sanders' statement that he put his hands on the aide was "a lie."

CNN said in a statement that the White House revoked Acosta's press pass out of "retaliation for his challenging questions" Wednesday, and the network accused Sanders of lying about Acosta's actions.

"(Sanders) provided fraudulent accusations and cited an incident that never happened. This unprecedented decision is a threat to our democracy and the country deserves better," CNN said. "Jim Acosta has our full support."

Journalists assigned to cover the White House apply for passes that allow them daily access to press areas in the West Wing. White House staffers decide whether journalists are eligible, though the Secret Service determines whether their applications are approved.

The post-midterm election news conference marked a new low in the president's relationship with journalists.

"It's such a hostile media," Trump said after ordering reporter April Ryan of the American Urban Radio Networks to sit down when she tried to ask him a question.

The president complained that the media did not cover the humming economy and was responsible for much of the country's divided politics. He said, "I can do something fantastic, and they make it look not good."

His exchanges with CNN's Acosta and NBC News' Peter Alexander turned bitterly personal, unusual even for a forum where the nature of their jobs often put presidents and the press at odds.