A tsunami warning has been issued for several small islands after a strong earthquake shook an area off Japan's southern coast.
The Meteorological Agency said the earthquake registered a magnitude 6.6. The US Geological Survey measured it at 6.4.
There were no immediate reports of damage or casualties.
The Japanese agency said the tsunami was expected to be about 1.6 feet high.
The quake hit 69 miles off the southern coast of Miyakojima island, in southern Japan, at a depth of six miles, it said.
The small island is about 1,120 miles southwest of Tokyo.
Japan is one of the world's most earthquake-prone countries. In 1995, a magnitude-7.2 quake in the western port city of Kobe killed 6,400 people.