Two sources close to the situation told Business Insider that after the taping was done Miller was asked to leave several times.
He ignored those requests and ultimately security was called and he was escorted out, the sources said.
CNN declined to comment.
The interview went south as Miller avoided Tapper's questions on the veracity of claims made in Michael Wolff's book "Fire and Fury", with Miller attacking the network instead:
Miller repeatedly attempted to pivot the conversation toward criticism of CNN, a favorite target of Trump's. He then referred to Trump as a "political genius" and lamented his treatment during the interview, leading Tapper to reply that there was only "one viewer you care about right now."