A person with knowledge of the situation told CNN that employees have been left puzzled as to why no one has been held accountable for one of Fox News’ most high-profile mistakes.

“No one knows,” the person said. “This is like a huge question mark internally. This is a giant mystery.”…

“I think the lack of transparency is not that surprising,” the senior Fox News employee said. “But it really forces the question, how much journalistic integrity does Fox News really have? Because most other news outlets, these situations come up, but they are dealt with appropriately. People are held accountable. People are fired, they are disciplined or whatever. But this is like classic Fox. No one ever gets fired from Fox for publishing a story that isn’t true.”