Okinawa's mayor says a U.S. soldier's alleged sexual assault not only "causes great fear to local residents," but "tramples on the dignity of women."

Japan’s government is calling for stricter oversight of U.S. troops stationed in the country after a soldier was charged over the alleged sexual assault of a Japanese teenager in Okinawa. Prosecutors in the southern island region charged the U.S. soldier in March, top government spokesman Yoshimasa Hayashi told reporters on Tuesday.

Local media said the 25-year-old man had been accused of assault, adding that he knew the girl was under 16, the age of consent in Japan.