The Tokyo subway sarin attack was a domestic chemical terrorist attack perpetrated on 20 March 1995, in Tokyo, Japan, by members of the Aum Shinrikyo cult. In five coordinated attacks, the perpetrators released sarin, a nerve agent, on three lines of the Tokyo Metro during rush hour, killing 14 people, severely injuring 50, and causing temporary vision problems for nearly 1,000 others. The attack was directed against trains passing through Kasumigaseki and Nagatachō, where the National Diet is headquartered in Tokyo.