https://www.humanreligions.info/tags/mass_murder.html
Human Truth Foundation pages (4):
Religion in Japan: 5. Aum Shinrikyō
Aum Shinrikyō
A List of All Religions and Belief Systems
Religion, Violence, Crime and Mass Suicide: 4.6. Apocalyptic Survivalism: Aum Shinrikyō's Tokyo Sarin Gas Attack (1995)