Spokesman Aaron Tarver said the embassy received the package Wednesday, and a sample of the powder was being tested. Tarver said no one was reported sickened.
The Korea Centers for Disease Control and Prevention said the substance was not anthrax nor the deadly poison ricin — both of which have been used in mail attacks in the U.S. Additional tests are being conducted with results expected in the next few days.
Last week, the FBI said eight U.S. embassies in Europe received letters containing a white powder in what the agency called a hoax. It said governors' offices in more than 40 U.S. states had received similar letters recently.
That last paragraph is especially alarming, hoaxes or not.