The sarin attack in the Tokyo Underground happened on 20 March 1995. The Kasumigaiseki and Nagatatyo stations appeared to be in the epicenter of the attack. This dreadful crime was committed by the Aum Shinrike cult followers. Ten people were the perpetrators. They entered the subway cars carrying the plastic bags with sarin, a poisonous gas developed by Nazi, and then punctured the packets with the sharpened ends of their umbrellas. At the exits of the stations they were met by their accomplices and driven by cars to the Aum Shinrike headquarters.