US Marine held in Okinawa murder case as Japan demands cooperation

A 20-year-old US Marine has been arrested in Okinawa on suspicion of robbing and murdering a Japanese woman, prompting the government in Tokyo to lodge a formal protest with Washington and demand closer cooperation with the investigation. The woman, identified by the South China Morning Post as 39-year-old Anna Yagi, was found dead at a hotel in Naha, the prefectural capital, on Saturday. Okinawa police suspect that she was killed by suffocation and that her wallet and backpack were taken.

The accused Marine, identified in the SCMP report as Davin Ballard and based at Marine Corps Air Station Futenma, has denied the charges. Police and Japanese media said CCTV footage showed a foreign man entering a hotel room with a woman and later leaving with her belongings. Officers later found a 20-year-old man matching the description as he walked alone in Naha’s entertainment district, according to the SCMP.

He voluntarily accompanied police to a station before being arrested, while other reports said he was questioned and detained. Prime Minister Sanae Takaichi called the incident “extremely regrettable” and “exceptionally brutal and vicious”. She said Japan had strongly protested to the US and sought maximum cooperation, tighter discipline among American military personnel and measures to prevent similar incidents.

Vice-Foreign Minister Takehiro Funakoshi also lodged a protest with US Ambassador George Glass, according to Japan’s foreign ministry. Japanese Defence Minister Shinjiro Koizumi said the incident was unacceptable and that crimes and accidents involving US personnel caused great anxiety in local communities. Glass said he had spoken with the foreign ministry and Okinawa’s governor, offering condolences and pledging full cooperation.

The US Marine Corps said the serviceman was in Japanese custody, that it took the allegations seriously and expected all Marines to meet the highest standards of conduct. The reports differ in the level of detail they provide about the case. The SCMP names the suspect and victim and reports the suspected cause of death, while DW and Punch Nigeria describe the arrest and allegations without independently adding those details.

All three accounts stress that the investigation is continuing and that the suspect reportedly denies the charges. The arrest has renewed attention on the political sensitivity of the US military presence in Okinawa. About 54,000 US military personnel are stationed in Japan, including roughly 18,000 Marines, with most Marines based in Okinawa.

The island is strategically important to Tokyo and Washington because of its location about 100 kilometres from Taiwan, but residents have long protested over noise, aircraft accidents and alleged misconduct. Earlier cases cited by the reports include a 2024 conviction of a US Marine for choking and attempting to rape a woman, and a 2017 life sentence for a former Marine and civilian base worker convicted of raping and murdering a local woman. The Yomiuri Shimbun, cited by the reports, said about 6,000 US military personnel had been arrested in Okinawa since 1972, with 80 arrests in 2024, the highest number in two decades.