TOKYO, April 4 (UPI) -- Japanese civilian and military authorities are investigating a possible leak of information to China on the U.S Aegis air defense system.
The target of the investigation is an officer of Japan's Maritime Self Defense Force married to a Chinese woman suspected of spying.
The officer allegedly had taken home classified information without authority. The sailor, a petty officer, was stationed aboard the Shirane, a destroyer.
The Asahi Shimbun newspaper Wednesday said the investigation was being conducted by Kanagawa prefecture police and MSDF personnel.
Officials reported said the probe could be extended to others for violating secrecy laws in the Japan-U.S. Mutual Defense Assistance Agreement.
Police said a hard disk containing information on the ship and its U.S. Aegis system were found in his home in January while police were searching for evidence related to his wife's alleged espionage.
Civilian police conducted the initial investigation but said Wednesday they had decided to continue their probe in cooperation with the MSDF.