A former member of Aum Shinrikyo plans to deny involvement in the doomsday cult's deadly 1995 sarin nerve gas attack on the Tokyo subway system, sources said.

Katsuya Takahashi, 56, also intends to deny some of the charges against him in connection with two other crimes when he appears at the Tokyo District Court, where he is expected to face a lay judge trial next year, the sources said Monday.

Takahashi has been indicted in connection with a string of incidents including the sarin gas attack on March 20, 1995, that killed 13 people and left more than 6,000 ill.