Microscope view of bacillus anthrax spores. Suspected anthrax bacteria was detected at a mail delivery facility at the Pentagon and at another satellite facility, but subsequent tests have proved negative, the Defense Department said. (File photo: AFP/Yahoo)

Pentagon and local law enforcement agencies guard the entry to a mail facility at the Pentagon, Monday, March 14, 2005. The Pentagon shut down two mail facilities on Monday as a precautionary measure after alarm was triggered by sensors detecting chemical and biological agents at one of the facilities, officials said. (File photo: AFP/Yahoo)

    BEIJING, Mar. 15 -- The Pentagon has shut down two mail facilities as a precautionary measure after an alarm was triggered by sensors detecting chemical and biological agents at one of the facilities.

    Officials told local television networks that tests have not uncovered the presence of any chemical agents.

    The officials evacuated and shut down the first facility, in a separate building on the northwest side of the Pentagon grounds, shortly after the sensors were triggered on Monday morning.

    Emergency services determined that the detectors indicated the possible presence of anthrax at the first mail site, known as the RDF, or remote delivery facility.

    The facility was built before the terrorist attacks of Sept. 11, 2001 to screen all trucks and packages apart from the main Pentagon population.

    The Pentagon closed the second mail facility, miles from the Pentagon, in the afternoon as a precautionary measure.

(Source: CRIENGLISH.com)