Anthrax hoax package found in Washington, D.C.

United States authorities said on Friday that they found no hazard after checking a suspicious package with an unknown powdery substance delivered to a downtown Washington, D.C. office building.
The package was delivered to a building several blocks from the U.S. Capitol complex. Agents from the FBI and members of the D.C. Fire Department, including its hazardous materials unit, found no threat or danger, spokesmen for both agencies said, Reuters reports.
After the incident, there were no reports of illnesses or injury, according to the D.C. Fire Department. The Internal Revenue Service and the publication CQ Roll Call both have offices in the building.
Washington has been wary of white powder being sent to private offices and federal buildings after letters laced with deadly anthrax were sent to lawmakers and media buildings in late 2001. In that attack, five people died and 17 others were sickened, none of them lawmakers.
The letters were later linked to Army researcher Bruce Ivins, who subsequently committed suicide.
According to the Centers for Disease Control and Prevention, anthrax is caused by the spore-forming bacterium bacillus anthracis. Anthrax can be spread via animals when humans come into contact with products from infected animals or by breathing in anthrax spores from infected animal products. Anthrax is also spread as a weapon, as it was when used in the 2001 attacks.