Microbiologist says anthrax suspect was stalker

Investigators have said that between 2000 and 2006, Ivins was prescribed antidepressants, antipsychotics and anti-anxiety drugs. The Army Medical Research Institute of Infectious Diseases at Fort Detrick in Frederick, Md., where Ivins worked, has offered no explanation for why he was allowed to work with some of the world's most dangerous toxins while suffering from serious mental health problems.

It wasn't until November 2007, after the FBI raided his Frederick home, that Fort Detrick revoked his laboratory access, effectively putting him on desk duty. In the meantime, Haigwood said she worried about what Ivins was up to in the lab.

"After a while, after I decided that he was probably the perpetrator, I was afraid of him," Haigwood said. "I thought that if he found out I had turned him in, he would go after me. And he knew how to do that. This is something his colleagues don't seem to recognize in him."

Haigwood said she was not aware of Ivins stalking any other Kappa sisters.

In an interview Friday, Kappa Kappa Gamma executive director Lauren Sullivan Paitson said the FBI asked in August 2007 for help documenting decades' worth of Ivins' contacts with the sorority, including breaking into the now-closed chapter house at the University of Maryland. The sorority disbanded at Maryland in 1992.

But before being contacted by the FBI, Paitson had been engaged in an editing war on Wikipedia.com with a writer by the name of "jimmyflathead" who threatened to post secret rituals and bad publicity about the sorority on the Web site. Court affidavits listed "jimmyflathead@yahoo.com" among Ivins personal e-mail addresses.

Only after the government asked for the sorority's help did Paitson realize that the online Kappa nemesis was the top suspect in the anthrax investigation.

"We already had firsthand experience with him, going back and forth," she said.

The sorority did not threaten Ivins with legal action as a result of the Wikipedia editing dispute, and Paitson said she was assured by the FBI that none of the Kappa chapters or members nationwide would be targeted with anthrax letters.

She declined to give more details, citing the privacy of the members of the sorority.

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