clipped from: en.wikipedia.org   
Time Magazine cover after the Sarin gas attack in Tokyo

Aum Shinrikyo

Aum Shinrikyo, now known as Aleph, is a Japanese religious group founded by Shoko Asahara. The group gained international notoriety in 1995, when several of its followers carried out a Sarin gas attack in the Tokyo subways.

1995 Tokyo sarin gas attacks and related incidents
On the morning of 20th March 1995, Aum members released sarin in a co-ordinated attack on five trains in the Tokyo subway system, killing 12 commuters, seriously harming 54 and affecting 980 more. Prosecutors allege that Asahara was tipped off about planned police raids on cult facilities by an insider, and ordered an attack in central Tokyo to divert attention away from the group.
A train stopped at Shinjuku Station.