White powder, anthrax threat closes US tax office

June 28, 2007 00:45

A letter containing a white powder and a note mentioning anthrax forced US authorities Wednesday to shut down the mailroom of the Kansas City headquarters of the Internal Revenue Service. The letter was sealed and sent to a lab in Jefferson City, Missouri, for further testing, said FBI spokesman Bob Herndon. "We do not think this is going to be anthrax or any other biological agent, but we have to treat this to the n-th degree," Herndon said, adding that a field test found the substance likely to be talcum powder. A mailroom employee who handled the letter went through decontamination procedures, Herndon said.

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