The Federal Bureau of Investigation (FBI) has questioned two University of Pittsburgh genetics researchers in connection with a grand jury probe into possible violations of a US anti-bioterrorism law by a Buffalo art professor. Meanwhile, two more subpoenas have been issued in the case, one to a former student of the professor and the other to the publisher of five books the professor wrote with colleagues.

Steven Kurtz, an associate professor at the Buffalo campus of the State University of New York, is being investigated because police noticed Petri dishes and a mobile DNA extraction laboratory in his home that he used in his most recent project, according to his lawyer and some supporters, after he called 911 early May 11 to report that his 45-year-old wife had died overnight.

Although eight of Kurtz's present and former art colleagues were subpoenaed to testify on June 15, only one...

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