A magnitude 7.5 earthquake has struck the Tanimbar region in Indonesia, the European Mediterranean Seismological Centre says, with the tremor felt as far away as Darwin.
The undersea quake occurred early on Tuesday at a depth of 97km, the centre says.
The quake jolted residents awake in Darwin around 3.15am, the ABC has reported.
The Joint Australian Tsunami Warning Centre assessed there was no tsunami threat to the Australian mainland, islands or territories.
Darwin resident Trevor Power told the Nine network the quake was the worst he had felt in 40 years in the city and over two minutes it shook more and more, accompanied by a roaring sound.
"The house started shaking then she really started shaking to the point you could hear the windows start to rattle and creak."
Mr Power said his family rushed outside where the car was shaking in the driveway and the dogs were "going absolutely crazy".
He said he feared there could be severe damage and casualties around where the quake struck in Indonesia.
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