Latest info:

Bruce E. Ivins, the late microbiologist suspected in the 2001 anthrax attacks, had attempted to poison people and his therapist said she was “scared to death” of him, according to court testimony that emerged Saturday.

Social worker Jean Duley testified at a court hearing in Frederick on July 24 in a successful bid for a protective order from Ivins – who five days later committed suicide – that he “actually attempted to murder several other people.”

An audio recording of the court session was obtained by The New York Times and posted it on its Web site.

“As far back as the year 2000, the respondent has actually attempted to murder several other people, either through poisoning. He is a revenge killer. When he feels that he’s been slighted or has had – especially toward women – he plots and actually tries to carry out revenge killings,” Duley said.

She added that Ivins “has been forensically diagnosed by several top psychiatrists as a sociopathic, homicidal killer. I have that in evidence. And through my working with him, I also believe that to be very true.”

The Justice Department attributed the break in the case to “new and sophisticated scientific tools” that cost the FBI about $10 million. Investigators said the science focused, in part, on how the anthrax strains were handled and who had access to it at the time of the mailings.

FBI scientists were able to isolate strains used in the attacks, and determined they were not as common as previously thought. And that led investigators to Ivins.

Had the same process been available years ago, it would have cleared Hatfill much earlier, according to two people familiar with the FBI investigation who spoke on condition of anonymity because the case is not officially closed.