US Secretary of State Marco Rubio spoke with Japanese Foreign Minister Motegi Toshimitsu by phone on Saturday, the US Department of State said, offering condolences and vowing to cooperate with Japanese authorities as they investigate the killing of Anna Yagi, 39, in a hotel in Naha.
Devin Jacob Ballard, a Marine stationed at Marine Corps Air Station Futenma, was arrested on October 4 on suspicion of robbing and murdering Yagi. According to local police, she was choked to death and her wallet stolen. Ballard has denied the allegations.
The killing has provoked outrage in Japan, where crimes involving US service members have long inflamed criticism of the US military presence. Japan hosts the largest overseas contingent of US forces globally, with most of the 18,000 Japan-based Marines stationed on Okinawa.
Following the incident, US military personnel in Okinawa have been placed under a month-long curfew and banned from drinking alcohol while they undergo mandatory discipline training.
In their call, Rubio and Toshimitsu also discussed US sanctions on the International Criminal Court and the upcoming G20 Foreign Ministers meeting in Atlanta, scheduled to begin on October 30.