Investigators Reenter Site of Anthrax Attack

Clad in white protective suits, investigators set up devices inside the quarantined former headquarters of the National Enquirer to take samples and search for clues in last fall’s anthrax attack.

The teams of FBI agents and scientists hope to find the letter or package that brought the anthrax into the Boca Raton building and fatally infected a photo editor. FBI investigators also want to compare the anthrax spores found in the American Media Inc. building to the spores found in letters sent to the Washington offices of Sens. Patrick J. Leahy of Vermont and Tom Daschle of South Dakota.

As the trail leading to suspects in the attacks grows colder, the FBI said it was trying new techniques to search for large quantities of spores in hopes of finding evidence overlooked before.