A magnitude 6.3 earthquake struck the eastern Indonesian region of Papua on Tuesday, the US Geological Survey said, but a monitor said there was no tsunami threat, writes dailymail.co.uk.

The epicentre of the quake, which struck at around 5:24 pm (0824 GMT), was around 193 kilometres northwest of the town of Abepura in Papua, USGS said.

The Pacific Tsunami Warning Center said there was no tsunami threat. There were no immediate reports of casualties or damage. USGS earlier gave a magnitude of 6.5 before revising it downward.

The vast archipelago nation experiences frequent earthquakes due to its position on the Pacific "Ring of Fire", an arc of intense seismic activity where tectonic plates collide that stretches from Japan through Southeast Asia and across the Pacific basin.