But neither of his reports about Clinton were accurate, Baier acknowledged Friday morning in a "Fox News alert" conversation with Fox News anchor Jon Scott.
Baier said he relied on a single anonymous source within the FBI for his report about an alleged hack of the server: "I was quoting from one source about his certainty that the server had been hacked by five foreign intelligence agencies. . . . As of today there still are no digital fingerprints of a breach, no matter what the working assumption is within the bureau."
He added, "All the time, but especially in a heated election, on a topic this explosive, every word matters no matter how well sourced."
He went on to describe his comment to Hume about an indictment - which he has previously called "inartful" - as more than that.
"I explained the phrasing of one my answers to Brit Hume on Wednesday night, saying it was inartful the way I answered the last question about whether the investigations would continue after the election. And I answered that yes, our sources said it would, they would continue to likely an indictment.
"Well, that wasn't just inartful. It was a mistake. And for that I'm sorry. I should have said they will continue to build their case.
"Indictment obviously is a very loaded word, Jon, especially in this atmosphere and no one knows if there would or would not be an indictment no matter how strong investigators feel their evidence is. It's obviously a prosecutor who has to agree to take the case and make that case to a grand jury."
As an addendum, he added, "We stand by the sourcing on the ongoing, active Clinton Foundation investigation and are working to get sources with knowledge of the details on the record and on camera, hopefully today."