Some months prior, in May 1995, Lewis, fellow scholar Gordon Melton and religious freedom lawyer Barry Fisher had flown to Japan in the early stages of investigations into the sarin gas attack on the Tokyo subway to voice their concern that police behaviour, including mass detentions without charge and the removal of practitioners' children from the group, might be infringing the civil rights of Aum Shinrikyo members. They had travelled to Japan at the invitation and expense of Aum Shinrikyo after they had contacted the group to express concern over developments, and met with officials over a period of three days. While not having been given access to the group's chemical laboratories, they held press conferences in Japan stating their belief, based on the documentation they had been given by the group, that the group did not have the ability to produce sarin and was being scapegoated. Lewis likened the group's treatment to a Japanese Waco. The scholars' defense of Aum Shinrikyo led to a crisis of confidence in religious scholarship when the group turned out to have been responsible for the attack after all.