WATCH: CNN’s Don Lemon abruptly shuts down panel after Trump apologist keeps ‘rudely interrupting’ guests
Robert Ray, Don Lemon -- CNN screenshot

CNN's Don Lemon called a halt to an panel Thursday night after a former federal prosecutor was continually rude to the other guests, leading the CNN host to warn him, "I'm not going to ask you again."

Addressing the blockbuster report President Donald Trump asked White House counsel Doug McGahn to fire special counsel Robert Mueller last June, Robert Ray -- who took over the Whitewater investigation after Kenneth Starr, continued to talk over the other guests and insulted CNN legal analyst Laura Coates.

Arguing legal points, Ray talked over Coates, calling her observations "irrelevant," leading to a contentious exchange where Lemon had to step in and tell the former prosecutor, "Hang on, hold on. we all need to be respectful of each other. we shouldn't name call and be rude."

As Ray then turned to arguing with CNN analyst Michael Zeldon - again interrupting and talking over him -- Lemon had enough, telling Ray, "Let him finish."

"Hang on, Robert, you have to let the man finish or the woman finish before you interject," Lemon cautioned.

"Go ahead," Ray shot back.

"Because then we will let you respond," Lemon admonished him. "But people can't make the points if you're rudely interrupting them all the time."

"Okay, all right. Let's hear it, I'm waiting," Ray smirked.

"You know what, we'll wait a little longer. We'll take a break." Lemon stated. "We'll come back, but please don't be rude. Alright?"

"I'm hearing you," Ray retorted.

"I'm saying alright, I'm not asking if you hear me." Lemon shot back.

You can watch the video below via CNN: