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Tokyo subway sarin attack

Members of Aum Shinrikyo released sarin on crowded commuter trains.

Place
Tokyo, Japan
Date
20 Mar 1995
Status
SolvedAuthorities consider the case resolved, usually after identifying or convicting the responsible person.
Sources
3 cited sources

Updated 20 Aug 2026

Overview

Case overview

During the morning rush hour on 20 March 1995, Aum Shinrikyo members carried packets of liquid sarin onto five trains converging on central Tokyo. [1]

The attackers punctured the packets before leaving the trains. Thirteen people died at the time, another later died from complications, and thousands sought medical treatment. [2]

Inspection of the sarin attack memorial plaque at Kasumigaseki Station
Inspection of the sarin attack memorial plaque at Kasumigaseki StationMinistry of Land, Infrastructure, Transport and Tourism · CC BY 4.0 · View original ↗
Detailed chronology

Key events

6 sourced milestones

Major events in the case, shown in chronological order.

  1. Sarin is released on five trains

    Aum Shinrikyo members punctured bags of liquid sarin aboard trains converging on central Tokyo during the morning rush hour.

    Source: Public Security Intelligence Agency of Japan ↗
  2. Police raid Aum facilities

    Police launched large-scale raids on Aum Shinrikyo properties, recovering chemicals and evidence while searching for the group's leaders.

    Source: Public Security Intelligence Agency of Japan ↗
  3. The group's leader is arrested

    Police arrested Aum Shinrikyo leader Shoko Asahara after raids and an expanding investigation into the coordinated attack.

    Source: Wikipedia ↗
  4. Asahara is convicted

    A Japanese court convicted Asahara of directing the subway attack and other crimes and imposed a death sentence.

    Source: Public Security Intelligence Agency of Japan ↗
  5. The final fugitive is arrested

    Police arrested Katsuya Takahashi, the last Aum member still wanted in connection with the attack, ending a seventeen-year fugitive search.

    Source: Public Security Intelligence Agency of Japan ↗
  6. Sentences are carried out

    Japan executed Asahara and twelve other Aum members after the principal criminal proceedings and appeals had concluded.

    Source: Wikipedia ↗
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