Officials said the anthrax exposures here were contained to the American Media building.
He said results of tests for anthrax exposure could be available on Monday.
Five people died of anthrax exposure last fall.
Last week, on a single day, there were more than 200 reports of possible anthrax exposure.
The police said the buildings, which are across the street from the Capitol, would be tested for anthrax exposure.
The center had been shut down and reopened last week after an employee showed symptoms of anthrax exposure.
Some of the sites carry banner headlines on anthrax exposure.
The other came from the Senate, which decided to continue operating even though some staff members had tested positive for anthrax exposure.
What types of gloves are recommended as a precaution for anthrax exposure?
If you have any reason to believe that anthrax exposure is linked to foul play, contact local law enforcement immediately.
