A 6.9-magnitude earthquake struck off Japan’s southern coast on Tuesday, shaking a broad swath of the country and swaying buildings in downtown Tokyo.

No damage or injuries were immediately reported, and Japan’s meteorological agency said there was no danger of a tsunami.

The temblor hit at 12:25 pm local time (0855 hrs IST), with the epicentre near the Ogasawara Islands, about 800 kilometres south of the main Japanese island, the agency said. It struck at a depth of 480 kilometres.

Japan’s meteorological agency reported a magnitude of 6.9, however, the US Geological Survey said the quake was 6.6.

The reason for the discrepancy was not immediately clear.

The Ogasawara are known as the Bonin Islands outside of Japan.

Japan is one of the most earthquake-prone countries in the world. In 1995, a quake of magnitude 7.2 killed 6,400 people in the western port city of Kobe.