Details of the case against a US government scientist allegedly behind the anthrax letter scare which killed five people seven years ago, are being released.
Suspect Bruce Ivins, an army scientist who commit suicide last week, used language similar to what was printed in Anthrax laced letters that killed five people in 2001.
According to documents released by the justice department, authorities searched Ivins's home on November 2, 2007, taking 22 swabs of vacuum filters and radiators and seizing dozens of items.
Among them were video cassettes, family photos, information about guns and a copy of "The Plague" by Albert Camus.
Ivins was unable to give investigators "an adequate explanation for his late laboratory work hours around the time of" the attacks, and he apparently sought to mislead investigators on the case.
His suicide came as investigators were planning to charge him with the 2001 attacks.