A large earthquake has hit Japan.
The 6.1 magnitude tremor was reported in the north of the country's Okinawa prefecture.
There have been immediate reports of damage or casualties.
The quake hit at a depth of 257 km about 346 km north of the city of Naha.

Congo Ebola outbreak kills more than 5,000
Saudi Arabia intercepts and destroys drone in Mecca region
7 dead after torrential rains triggered flash floods in eastern Syria
Six feared dead in helicopter crash in Indian Himalayan state, media report
