A 22-year-old U.S. Marine was indicted in December over an alleged sexual assault resulting in injury of a woman in Okinawa Prefecture, local prosecutors said Tuesday, bringing to light another alleged crime involving U.S. military personnel there.

The marine, Lance Corp. Jordan Begaye, allegedly assaulted the woman, with whom he had no personal acquaintance, off base in October. The victim sustained injuries in the assault, according to the indictment and investigators.

The prosecutors did not disclose whether Begaye has admitted to the charge. They indicted him on Dec. 23 but said they refrained from notifying the public about the case "due to its nature."