Four members of a religious sect were arrested Thursday in connection with the death of a fellow cultist in September, according to Tokyo police.

The four include Keroyon sect leader Yuko Kitazawa, 40, and Masataka Fujibayashi, 35, a former Aum Shinrikyo member. They are suspected of inflicting injury resulting in the Sept. 10 death of a 36-year-old woman who had been an Aum Shinrikyo member before she joined Keroyon, police said.

Keroyon follows the teachings of Aum founder Shoko Asahara.