The U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID) has suspended research activities involving biological select agents and toxins. Army officials took the step on Friday after discovering apparent problems with the system of accounting for high-risk microbes and biomaterials at the Fort Detrick, Maryland, facility.
Documents from the inquiry show that one unauthorized person who was observed entering the lab building at night was Langford's predecessor, Lt. Col. Philip Zack, who at the time no longer worked at Fort Detrick. A surveillance camera recorded Zack being let in at 8:40 p.m. on Jan. 23, 1992, apparently by Dr. Marian Rippy, a lab pathologist and close friend of Zack's, according to a report filed by a security guard.