Japan protests to US over Okinawa 'assault'
Japan has protested to the US after another incident in Okinawa allegedly involving a member of the US military.
A US serviceman reportedly entered an apartment above a bar and hit a teenage boy. The man fell from a window and was taken to hospital, local reports said.
The incident comes with all US troops in Japan under a night-time curfew following an alleged rape.
Rupert Wingfield-Hayes reports from Tokyo.