Fox News host Tucker Carlson spoke out on Thursday night to relentlessly mock his former colleague Shep Smith, continuing the longstanding feud they have.

Smith left Fox News at the end of 2019, and he has since taken a job hosting on CNBC, where he has vowed to “fight disinformation.” Carlson went after Smith on his show on Thursday night for a story his former coworker recently covered.

“Tonight we bring you the story of a genuine investigative journalist,” Carlson said mockingly. “A man who’s been forgotten. Cast aside like an Acosta when he should be an Edward R. Murrow. That’s an injustice we plan to rectify right now.”

Carlson went on to mock Smith for the way he covered the “maskess supermarket” scandal, according to The Daily Beast.

“Last night, this same investigative journalist—now an anchor at CNBC— broke the story of a lifetime,” he added. “If Pulitzer Prizes still mattered, and they don’t, this would get a Pulitzer. You have seen the Zapruder film. You’ve seen the moon landing. You’ve never seen anything like this.”

Carlson then played Smith’s story, in which the former Fox News host said that the scene looked “pre-pandemic” while commenting on the maskless people in the store.

“We believed the hype, I guess,” Carlson said. “Maybe when you spend 30 years reading scripts about car chases everything seems like a car chase.”

“The problem is, not everything is a car chase,” he concluded. “Sometimes people are just smiling at each other in a grocery store. Sorry, overheated news guy. That’s not actually news.”

This comes after Smith attacked Fox in a recent interview, turning on the network that made him famous.

“I stuck with it as long as I could,” Smith told PBS anchor Christiane Amanpour. “I don’t know how some people sleep at night. Because I know there are a lot of people who propagated the lies and have pushed them forward over and over again, who are smart enough and educated enough to know better.”