A US Marine died following a training incident at Camp Schwab in Okinawa, Japan, on Tuesday, the 3rd Marine Division announced on Wednesday, according to ABC News.
The US military said the incident was under investigation but did not provide details about the circumstances surrounding the Marine's death.
"It is with heavy hearts that 3rd Marine Division announces the death of a Marine following a training incident at Camp Schwab, Okinawa, Japan, on Nov. 3, 2026," the division said in a statement.
Lt. Tyler Thomas, a spokesperson for the III Marine Expeditionary Force, declined to say whether the Marine died at the scene or was transported to a hospital, ABC News reported. The Japan-based expeditionary force has participated in US military exercises in the Indo-Pacific, including drills in Guam earlier this year.
Thomas also declined to comment on whether any other personnel were injured in the incident, but confirmed that it occurred at Camp Schwab. The death comes amid renewed scrutiny of the US military presence in Okinawa following the arrest of a Marine suspected of murdering a Japanese woman in October.
US military investigates Marine's death
The Marine's identity is expected to be withheld until 24 hours after the family has been notified, Thomas said.
The 3rd Marine Division has not disclosed the type of training involved in Tuesday's incident or what caused the death.
The military has also not provided additional information about the circumstances of the incident or whether other service members were involved.
US military presence in Okinawa
Okinawa hosts most of the approximately 18,000 US Marines stationed in Japan. The American military presence on the island has long generated opposition among some residents over issues including noise, aircraft accidents and the conduct of military personnel.
Safety concerns surrounding US military activities have previously drawn attention following incidents on the island, including a US military helicopter crash in Okinawa in 2013.
The island also occupies a strategically important position in the Indo-Pacific, particularly because of its proximity to Taiwan and China's growing military activity in the region.
Washington and Tokyo have continued joint military exercises aimed at strengthening their defense cooperation. In September 2025, US troops participated in the Resolute Dragon exercise in Japan, which included the deployment of an American intermediate-range missile system.