Shoko Asahara, the leader of the doomsday cult behind the deadly 1995 nerve gas attack on the Tokyo subway system.... was executed by hanging on Friday. <br /> Asahara was the head of the Aum Shinrikyo cult that carried out the sarin gas attack on the Tokyo subway system.... that killed 12 people and injured more than 6-thousand others. <br />Tokyo District Court first handed down the death penalty to Asahara in 2004,.... and the Supreme Court finalized that decision in 2006.<br />In addition to Asahara,... 6 former members of the cult have also been executed. <br />
