“We have discovered today that over the course of the past few months one of our editors has made a series of egregious and inexplicable errors,” Daily News executive editor Jim Rich said in a statement. “These mistakes are unacceptable and the editor in question has been fired.”

A Daily Beast reporter, Justin Miller, first accused King of ripping off an article titled “Cops Taunted Black Veteran as He Died.” King’s article even included the same typo as the Daily Beast story (misspelling “sheriff” as “sherriff”).

Reporters at different newsrooms came forward and shared what they said were additional examples King plagiarizing other reports, including an article from FiveThirtyEight. In both cases, King denied any wrongdoing, and said the lack of attribution was the result of an editing error.

On Thursday, Sederstrom took the blame for the entire ordeal.

“In all honesty, the controversy — a f—k up on my part, to put it bluntly — comes down to two unintentional, albeit inexcusable, instances of sloppy editing on my part and a formatting glitch that until Tuesday I had no idea was systematically stripping out large blocks of indented quotations each time I moved Shaun’s copy from an email to The News’ own Content Management System, or ‘CMS’ as it’s called in media parlance,” he wrote.

“In those two cases where no citation or hyperlink appeared in the column, I believe I likely cut attribution from the top of Shaun’s quoted text with the intention of pasting them back inside the block — only to get distracted with another of the many responsibilities I juggled as an editor,” he added.

Sederstrom explained that he’s not looking to make excuses, but that he takes issue with Rich’s claim that the errors were “inexplicable.”

“They can happen easily if you’re not paying extreme attention to detail at every moment. Many of us in the news industry are increasingly under pressure to deliver an ever higher volume of stories with ever fewer resources and let’s just say, that doesn’t help,” he wrote.

Though he said the ordeal has left him “wracked with guilt,” he signaled it has also left him bitter against his former employer.

“While I believe the statement issued by Jim as the story was still evolving cast more suspicion than necessary — and that my seven years of loyal service at the Daily News were dismissed haphazardly — he was right to act fast following a rapidly escalating embarrassment involving a lightning rod of a columnist,” he wrote.

Neither Sederstrom nor the Daily News responded to the Washington Examiner’s request for comment.