A chemist sentenced to death for leading a doomsday group’s efforts to develop nerve gas used in a 1995 attack on the Tokyo underground rail network that killed 12 people has lodged an appeal with Japan’s top court.

A CHEMIST was convicted and sentenced to death yesterday for leading efforts by a doomsday cult to develop the nerve gas used in a 1995 attack on the Tokyo subways that killed 12 people, a court official said.

A chemist has been convicted of leading efforts by a doomsday cult to develop the nerve gas used in a 1995 attack on the Tokyo subways that killed 12 people.