""In the lawsuit, filed in the US district court in Washington on
Wednesday, Olson's sons Eric and Nils claim their father was murdered after he
witnessed extreme interrogations in which the CIA killed suspects using the
biological agents he had developed." "Olson began work at the special operations
division (SOP) of the army's biological laboratory at Fort Detrick in Maryland
in 1950. The CIA worked with the SOP researching biological agents and chemical
weapons. In 1952 and 1953, he was focused on bioweapons that could be
transmitted through the air, according to the lawsuit.""