An Aum Shinrikyo follower in her 30s was involved in the development of computer systems for Wakayama-based Kiyo Bank and several other financial institutions, it was learned Friday.
The Metropolitan Police Department said it is the first time an Aum follower has been definitely linked to the production of computer software programs for banks.
Police are investigating other reports of Aum members being involved in similar deals. Security authorities said earlier they suspect that the cult attempted to steal important data from the ministries and major companies, and that the computer business of the five Aum companies was an important source of funds for the cult.