The police subsequently located the rented van used in the kidnapping and found blood matching the brother's, as well as the fingerprint of a senior Aum member. The brother has not been found.
Mr. Asahara has denied any involvement in the kidnappings or killings. But the fact that many doubt his denials may offer him some protection, by making journalists afraid to write critical articles.
Japanese journalists say that there was some reluctance to write about Aum, because some reporters who had done so received threatening letters at their homes. Telephone taps have been found at the homes of some critics of Aum, although the group denies placing the taps.