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“James Rosen is exiting the company at the end of the year,” a Fox News spokesperson confirms, without providing further detail.

Rosen, 49, has been with Fox News since 1999, 3 years after the channel launched.

As the network’s Chief Washington Correspondent, he often reported for Special Report, but was seen throughout FNC’s programming day, most recently just yesterday.

That’s a pretty big loss for Fox News.

We’ll monitor this story and update with any developments.