Production on Bones has been halted because of swine flu, Hart Hanson, announced via Twitter.

“First time in Bones history we are shut down from production,” Hanson tweeted. “Damn swine flu! That’s gonna cut into Christmas hiatus.”

David Boreanaz has flu like symptoms, although it’s unclear if he actually has fully blown swine flu.

A source told EW.com:

“David is out with the flu and the show shut down today since he was in every scene. We hope to resume production tomorrow.”

Hanson later tweeted “there is no indication that Boreanaz has swine flu. We expect him back tomorrow. I’m now going out to get swine flu myself in atonement.”