"Members of the sinister Aum Shinrikyo (“Supreme Truth”) doomsday cult released the lethal nerve agent, originally developed by the Nazis, on 20 March 1995, targeting stations close to the Japanese parliament after they were tipped off to a planned police raid on their compound, plotting the atrocity as a hindrance to the authorities.
"The coordinated release of the toxin across three subway lines at the height of rush hour left 13 commuters dead, 50 more severely injured and over 1,000 others with temporary visual impairment.
"On a bright springtime Monday morning, five members of Aum Shinrikyo entered the underground system at different points, each wearing surgical masks and carrying one litre packets of liquid sarin, bound up inside newspapers in plastic bags.
"To put that in perspective, coming into contact with just one drop the size of a pinhead is enough to kill a healthy adult."
Full article at the UK Independent: Link
At Wiki: Link