Tokyo police arrested six people Friday in connection with three shooting incidents targeting offices of Aum Shinrikyo in Tokyo and Osaka, as well as a shooting at a teachers' union office in Hiroshima, for which a rightist group claimed responsibility.

Police arrested Ichiro Murakami, 54, chairman of a firm that manufactures synthetic resin products in the city of Gifu, and five others in connection with the shooting at the cult's facilities in Tokyo on May 29 and in Osaka on June 13, and against the union office on June 27.

No one was injured in any of the attacks, but the six are suspected of destroying property and violating firearms laws.