The Japanese government ended surveillance of Hikari no Wa in 2017 , but continued to keep Aleph under watch . On February 28 , 2019 , the Tokyo High Court ruled that another extension of the group 's surveillance would be allowed , since it has members who were involved in Aum , the terrorist group responsible for the Tokyo subway sarin attack in 1995 , and there is no evident major change between the former group and the current group . This decision overruled the 2017 decision to discontinue surveillance on the group
Tokyo subway sarin attack
Tokyo subway sarin attack
Hikari no Wa