Three decades have passed since a deadly sarin gas attack on Tokyo’s subway in Japan. The March 20, 1995, tragedy prompted a crackdown on Aum Shinrikyo, but offshoot groups continue to operate today. | South China Morning Post

The Tokyo Subway Sarin Attacks shook Japan to its core. Aum Shinryko is an apocalyptic doomsday cult that believed nuclear armageddon was inevitable and they would be the only survivors. They leaked Sarin on three trains on the Tokyo metro system, causing chaos. Sarin is a potent nerve agent that disrupts the nervous system. Nine people lost their lives with thousands more suffering health effects. A total of 13 Aum members were hanged for the attacks, including the cult's leader Shoko Asahara.