The Tokyo District Court handed former Aum Shinrikyo member Katsuya Takahashi life in prison on Thursday for his role in the doomsday cult's 1995 sarin attack on the Tokyo subway system that killed 13 people and sickened thousands.

Takahashi, 57, was also accused of involvement in three other attacks orchestrated by Aum during its heyday in the early 1990s.

Each crime he was involved in was "egregious and extremely inconsiderate of the importance of human lives," presiding Judge Tomomi Nakazato said.