**A strong earthquake has hit Japan’s southern coast, officials say.**The magnitude-6.4 quake struck at 1510 Japanese time (0610 GMT), about 115km (75 miles) off Ryukyu Islands, said the US Geological Survey.
It was located at a depth of 16.5km (10.3 miles). There are no reports of casualties of damage.
The Pacific Tsunami Warning Center said there was no danger of a tsunami. Earthquakes often hit the seismically active area.
In 1995, a magnitude-7.2 quake in the western port city of Kobe killed 6,400 people.
The Ryukyu islands are about 1,800km (1,120 miles) south-west of the Japanese capital, Tokyo.