Overview

• Masaki Matsuyama, 32, was taken into custody after an intrusion detection system at the Yokohama F. Marinos training facility in Yokosuka sounded around 1 a.m. on July 19.
• Police arrested the off-duty Self-Defense Forces member on suspicion of unauthorized entry under Japan’s Criminal Code.
• The suspect belongs to the 5th Brigade Communication Unit in Obihiro City and was temporarily stationed at the SDF’s Kurihama communications and cyber school.
• Authorities report that he had consumed alcohol the previous night and was intoxicated during the incident.
• Investigations by Yokosuka Minami Police are ongoing as questions arise over security protocols and military personnel accountability.