U.S. Marines conduct Osprey flights after 10 p.m. in Okinawa

The U.S. Marine Corps flew MV-22 Osprey aircraft after 10 p.m. earlier this week in Okinawa, Defense Minister Itsunori Onodera said Friday, despite a Japan-U.S. agreement to limit flights to the necessary minimum from late at night through early morning.

"I want to ask the U.S. side for detailed information," Onodera told a news conference.

The MV-22 Osprey tilt-rotor aircraft made flights around Futenma Air Station in Ginowan, Okinawa Prefecture, after 10 p.m. from Monday to Wednesday, according to the minister.

The agreement reached in September last year by the Japanese and U.S. governments concerning Ospreys states flights from 10 p.m. to 6 a.m. will be "limited to the minimum required."