A Self-Defense Force member was arrested Wednesday after allegedly killing two other personnel with a rifle at a Ground Self-Defense Force shooting range in the city of Gifu. Another victim was seriously injured.

The 18-year-old male suspect — who is a new GSDF recruit — was arrested at the scene for attempted murder. He admitted to the allegations, saying there was “no denying” that he had shot the victims, investigators said. The suspect is being held at a Gifu Prefectural Police station.

The incident marks the first fatal shooting at an SDF facility in nearly 40 years.