The 19-year-old son of a U.S. serviceman at Yokota Air Base in Tokyo was sent to the Tokyo Family Court on Friday on suspicion of stretching a rope across a road in August and injuring a woman on a minibike who became entangled in it.
Three other children of U.S. military personnel, aged 15 to 17, who were also involved in the case were not indicted and were handed over to U.S. authorities.
The four were initially arrested on suspicion of attempted murder, but the Tokyo prosecutors decided to charge only the 19-year-old with obstruction of traffic and causing injury.
The prosecutors said they could not establish whether the suspects had intended to kill through their actions.
According to prosecution documents, the 19-year-old suspect stretched a rope across a street in the town of Musashimurayama on Aug. 13, causing the woman to fall off her bike and fracture her skull.