Strong earthquake rattles northern Japan, no risk of tsunami

TOKYO - A strong earthquake has shaken northern Japan, but there is no risk of a tsunami.

The Japan Meteorological Agency said Tuesday evening's earthquake recorded 6.4 preliminary magnitude. The agency said there may be a small change in sea levels but did not issue warnings.

The epicenter was off the coast of Iwate and was about 10 kilometres (6 miles) below the sea surface.

Iwate was in the region heavily damaged by last year's earthquake and tsunami.