The cable TV network on Thursday published a story saying that the U.S. Senate Intelligence Committee was probing Trump campaign adviser Anthony Scaramucci for allegedly meeting with a Russian investor days before Trump's inauguration on January 20, citing an anonymous source.
Trump lashed out on Twitter, asking his followers what other fake news stories CNN was producing.
These types of stories are typically reviewed by several departments within CNN - including fact-checkers, journalism standards experts and lawyers - before publication.
It was unclear whether the story by reporter Thomas Frank appeared on any of CNN's television networks.
On Friday night, CNN removed the story from its site. CNN immediately apologized to Scaramucci.
CNN's public relations staff refuted Trump's notion that the network is hurting, saying it is completing the most-watched second quarter in the network's history. The retracted CNN story was heavily dependent upon on anonymous source. "Ratings way down", Trump tweeted.
China confident on growth despite headwinds
Beijing is targeting economic growth of around 6.5 per cent in 2017, compared with the actual 6.7 per cent pace in 2016 - the slowest in 26 years.
Sanders also mentioned the video, released by Project Veritas on Monday, in which CNN producer John Bonifield saying that the issue of an alleged collusion between Moscow and Trump was being fuelled deliberately.
Bonifield's comments show that a proper investigation would encompass CNN's culture and would begin at the top.
All three journalists were highly respected and their resignations were said to have come as a surprise to their colleagues.
Three of the network's investigative journalists resigned this week after publishing a false report based on an anonymous source which tied a top Trump official to Russian Federation. "Ratings way down!" Trump also took shots at other so-called "fake news" purveyors.
CNN's Jim Acosta gets into nearly daily skirmishes with White House press secretary Sean Spicer over questions about the administration's transparency. "Yes, it's a fine story - they just forgot to call it "breaking news" and have a countdown clock". The email went out on Saturday morning from Rich Barbieri, CNNMoney's executive editor, saying: "No one should publish any content involving Russian Federation without coming to me and Jason (Farkas, a CNN vice president)".
While the video is indeed embarrassing to CNN, there have been no reports of management changes in the works, and it is too early to say whether or not CNN's ratings will decline as a result of the videos. Creamer's firm recently sued Project Veritas alleging the sting violated federal wiretap law.
The CNN story was about a supposed investigation into a pre-inaugural meeting between a Trump associate and the head of a Russian investment fund.