Officials feared that the letter contained anthrax, but it did not.

By Saturday evening, it was still unclear whether the powder contained anthrax.

The new case could also be evidence of additional mail containing anthrax.

It is now believed that the envelope sent to The Times did not contain anthrax.

Administration officials said later that they did not believe that any letter containing anthrax had actually made its way to the White House.

Later that month, a letter containing anthrax was addressed to him as part of the 2001 anthrax attacks.

Even so, a backlog has developed, with people sometimes waiting several days to learn whether their suspicious letters contained anthrax.

Fearing that the powder contained anthrax, the bank manager called the police.

The events of Sept. 11, and now the letters containing anthrax, scare them.

The article in the journal said he had inspected "about 10 packages at high risk for containing anthrax."