Federal prosecutors investigating the 2001 anthrax attacks were planning to indict and seek the death penalty against a top Army microbiologist in connection with anthrax mailings that killed five people. The scientist, who was developing a vaccine against the deadly toxin, committed suicide this week.

The Justice Department has not yet decided whether to close the investigation, officials said, meaning it's still not certain whether Ivins acted alone or had help. One official close to the case said that decision was expected within days.

If the case is closed soon, one official said, that will indicate that Ivins was the lone suspect.

American Scofflaw

But no mention of Dr. Phillip Zack