Newscientist

From 911Encyclopedia:

In May 2002, the scientific magazine NewScientist repeated again, that one of the strains that appear identical to the anthrax attack (->) strain most likely originated at the US Army Medical Research Institute for Infectious Diseases at Fort Detrick (See Usamriid), Maryland. Three other strains came from a freezer at PortonDown, which in turn had got it from USAMRIID. Another was a culture that came directly from USAMRIID, and the last was from the US Army's Dugway proving ground in Utah. Source: http://www.newscientist.com/news/news.jsp?id=ns99992265