Quake hits off Japan, tsunami warning issued

A 6.8-magnitude quake has hit off northeast Japan coast, and a tsunami warning issued.

Japan has issued a tsunami warning after a 6.8 magnitude earthquake struck off its northeastern coast, warning of a wave as high as 50 centimetres.

The meteorological agency gave the tsunami warning after the tremor hit some 210 kilometres off the northern island of Hokkaido. But US monitors said there was no Pacific-wide tsunami threat.