No new clues had been discovered within the search on the eleventh as a consequence of an accident through which a Ground Self-Defense Force helicopter disappeared round Miyako Island in Okinawa Prefecture. The Japan Self-Defense Forces mentioned coral reefs and rocky seabed topography made the search tough.
Source
GSDF Helicopter Accident SDF “Difficult to go looking the topography of the seabed” Search at the moment | NHK
