A strong earthquake today with a preliminary magnitude of 6.0 occurred in Pacific Ocean waters off Japan's eastern coast, but there was no tsunami danger, Japan's Meteorological Agency said.

The 0204 p.m. (1034 IST) earthquake was centred about 140 km below the earth's surface, near the island of Tori-shima, the agency said.

Tori-shima is about 580 km southeast of Tokyo. There were no immediate reports of injury or damage.