Update 4:54pm: US President Donald Trump has used the resignations of three CNN journalists involved in a retracted Russia-related story to resume his attack on the network's credibility.
The story was about a supposed investigation into a pre-inaugural meeting between a Trump associate and the head of a Russian investment fund.
CNN accepted the journalists' resignations on Monday.
Mr Trump wrote in a Tuesday morning tweet: "Wow, CNN had to retract big story on 'Russia', with 3 employees forced to resign. What about all the other phony stories they do? FAKE NEWS!"
Wow, CNN had to retract big story on "Russia," with 3 employees forced to resign. What about all the other phony stories they do? FAKE NEWS!— Donald J. Trump (@realDonaldTrump) June 27, 2017
Earlier: Three CNN journalists have resigned, following a retracted story about a supposed investigation into a meeting between an associate of US president Donald Trump and the head of a Russian investment fund.
The story was posted on the US network's website on Thursday and was removed, with all links disabled, on Friday night.
CNN immediately apologised to Anthony Scaramucci, the Trump transition team member who was reported to be involved in the pre-inaugural meeting.
The story's author, Thomas Frank, was among those who resigned, according to a network executive.
Also losing their jobs were Eric Lichtblau, an assistant managing editor in CNN's Washington bureau, and Lex Haris, head of the investigations unit.
CNN, in initially taking down the story, said it did not meet its editorial standards.
The episode is a damaging blow for a network that Mr Trump has frequently derided as "fake news" and for a story that never made it on to any of CNN's television networks.
Fake News CNN is looking at big management changes now that they got caught falsely pushing their phony Russian stories. Ratings way down!— Donald J. Trump (@realDonaldTrump) June 27, 2017
The story had been quickly questioned both internally and externally, including by the conservative site Breitbart News.
It was determined that the story was posted without going through the expected checks and balances for a story of such sensitivity, the executive said.
The failure to follow proper procedures is what led to the resignations, the CNN executive said.
It was not immediately clear what in the story was factually incorrect, or whether CNN will continue to report on the issue.
The retracted story had said the Senate intelligence committee was looking into a January 16 discussion between Mr Scaramucci and Kirill Dmitriev, whose Russian Direct Investment Fund guides investments by US entities in Russia.
Mr Scaramucci, in the story, said he exchanged pleasantries in a restaurant with Mr Dmitriev.
The report also said two Democratic senators wanted to know whether Mr Scaramucci had indicated in the meeting whether sanctions against Russia would be lifted, a decision that could affect the investment fund.
Following the retraction, Mr Scaramucci tweeted that CNN "did the right thing. Classy move. Apology accepted. Everyone makes mistakes. Moving on".
In a statement to CNN's Reliable Sources, Mr Haris noted that he had been with CNN since 2001 "and am sure about one thing: This is a news organisation that prizes accuracy and fairness above all else. I am leaving, but will carry those principles wherever I go".