Japan protests to US envoy after Marine is arrested over killing of Okinawa woman

Japan lodged a protest with U.S. Ambassador George Glass on Sunday after police in Okinawa arrested a U.S. Marine on suspicion of robbing and killing a 39-year-old woman at a hotel in Naha, the prefecture's capital, early Saturday. Vice Minister for Foreign Affairs Takehiro Funakoshi delivered the protest, Japan's Foreign Ministry said, according to China's state news agency Xinhua. Prime Minister Sanae Takaichi also protested to the United States, Reuters reported.

"The occurrence of such an extremely brutal and vicious incident is extremely regrettable," Takaichi said in a statement. She said the government "strongly protests to the U.S. side and strongly seeks maximum cooperation with the investigation," and called for tighter discipline and thorough steps to prevent a recurrence, according to Reuters.

The suspect, Lance Cpl. Devin Jacob Ballard, 20, is assigned to Marine Corps Air Station Futenma. Police allege that he took the woman's wallet and a second item and killed her at the Naminoue Crystal Hotel between 2:10 a.m. and 4:17 a.m. on Saturday, Stars and Stripes reported, citing the Okinawa Prefectural Police. Xinhua said the stolen items were her wallet and backpack. Ballard has denied the allegations, police said.

According to police, hotel security cameras recorded the woman arriving with Ballard and the Marine later walking out on his own. A hotel employee found her unconscious after the two did not check out. Officers spotted and questioned Ballard in a Naha entertainment district late Saturday, Xinhua reported, and he was arrested early Sunday. Police expect to send the case to Naha prosecutors within 48 hours of the arrest, according to Stars and Stripes.

Washington's response

Marine Corps spokesman 1st Lt. Tyler Thomas said the Marine Corps was "actively cooperating with Japanese authorities in response to allegations of serious criminal actions by a Marine assigned to the III Marine Expeditionary Force." The U.S. Embassy in Tokyo said it was aware that a U.S. service member had been taken into custody after a Japanese national died in Okinawa. The embassy and the Marine Corps also expressed condolences, Reuters reported.

The case adds to a record that Xinhua described as a long-standing and serious problem for Okinawa, Japan's southernmost prefecture and home to Futenma. Citing official statistics, the agency said Okinawa police handled more than 100 criminal cases in 2025 alone involving U.S. service members or affiliated personnel.

What it means

The arrest reopens a long-running grievance at the alliance's most exposed point. With more than 100 cases involving U.S. personnel handled by Okinawa police last year, according to official figures cited by Xinhua, any new allegation against a service member is bound to draw close attention. This one involves a killing in the prefectural capital. A protest from the prime minister and a formal complaint to the U.S. ambassador the day after the woman's death show Tokyo wants to be seen acting fast. The Marine Corps' pledge to cooperate, with the suspect already in Japanese custody, suggests the case will run its course through Japan's legal system. Reuters noted that the case could complicate Takaichi's efforts to move some Marines from Futenma to a more remote site at Henoko. The next markers are how prosecutors handle the case once police refer it and whether U.S. officials go beyond statements of cooperation. Because Ballard denies the allegations, they will have to be tested by Japanese investigators and prosecutors, and both governments have an interest in keeping a criminal case from becoming a wider political test of the alliance.