An earthquake measuring 6.6 on the Richter scale jolted parts off northwest Australia on Sunday, the US Geological Survey (USGS) said.
The shallow earthquake at struck at 1.39 p.m. with a depth of 10.0 km, was centred 202 km west of Broome, a city on the coast of Western Australia, Xinhua news agency quoted the USGS as saying.
The Pacific Tsunami Warning Centre in Hawaii has not released a tsunami warning.
There were no immediate reports of damages or casualties.