1.   During the siege, the FBI had silenced its own expert, who warned that aggressive tactics might precipitate mass suicide in the doomsday religious group.

2.   Sect members have used their court appearances to discuss their attitudes toward Asahara and the doomsday group, with some turning against the sect.

3.   The Aum Supreme Truth doomsday group is suspected in connection with the attack but has denied involvement.

4.   The doomsday group, founded by Shoko Asahara, has denied any involvement in the gas attack.

5.   The doomsday group, founded by Shoko Asahara, has denied any involvement in the gas attack and criticized the confiscation of chemicals at its facilities by police.